10 inventions change the world but their owners are almost empty

Matches, steam engines for warships, bills, guns AK - 47 . are important inventions that contribute to changing the world but their father hardly gets anything or very little from those This spirit is all. Look back at their "unlucky" inventions and owners.

1. Match - John Walker

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We used fire to serve our needs and activities thousands of years ago. The match was discovered by inventor, chemical expert John Walker in 1827 with a rod using a mixture of sulfur, white phosphorus, lead oxide, manganese oxide and named friction match . But people often call them more matches .

When making matches, Walker did not register his patent because he was not satisfied with his design.Isaac Holde n then took over his work and was able to bring this product to most people around the world.

That's why people often believe that Holden is the master of this great invention. After John Walker passed away, he was recognized as a true author thanks to the investigation of the records found earlier.

2. Steam engine for warships - Benjamin Bradley

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Benjamin Bradley was a slave born in the 19th century. He was fortunate to be secretly taught by the slave owner's son, thus demonstrating his extraordinary ability in mathematics and reading comprehension.

Around the 1830s, he was accepted into an engineering position and created a steam engine from parts and waste discarded around the living and working area.

Later, he worked for the US Naval Academy at Annapolis, Maryland, where he directly participated and assisted in conducting numerous studies. Every month Benjamin Bradley was paid but he was only allowed to keep $ 5 for himself, the rest would belong to his employer.

Although he made a great contribution to the departure test for the first American steam engine ship, he did not have the right to own a patent because he was still a slave. Until he made enough money to buy back his freedom, it was too late to confirm his name through this important invention of mankind.

3. Magnetized credit card - Ron Klein

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Ron Klein is the inventor of the black magnetic stripe on credit cards, bringing billions of dollars to manufacturing companies. This is a method to encrypt, transmit an account's basic information onto the magnetic tape recorder, so attach it to the back of a credit card.

But Klein was able to get a small fraction of the profits from the invention. He claimed to be the " Father of inventions " and had a rather affluent life thanks to his other inventions.

4. Duck feet steam engine - Benjamin T. Montgomery

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Ben Montgomery was a slave in Virginia, sold to a southern plantation owner, Joseph Davis in the Mississippi River.

To combat and overcome the difficulties of moving across the river due to the effects of complex water levels and depths, Montgomery invented a new method aimed at a steam engine propeller system, creating the most favorable conditions for boats in shallow water.

This invention opened up a new history in the Mississippi river shipping industry.

As a slave, Ben Montgomery has no right to claim his invention. But luckily escaped slavery thanks to the money Davis allowed Montgomery to get through that invention. .

5. Gun AK-47 - Mikhail Kalashnikov

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The AK-47 is the most commonly used automatic gun on the planet, invented by Mikhail Kalashnikov, a commanding officer of Soviet army forces in World War II in 1947.

Very soon this weapon became popular, and was used worldwide. Currently about 100 million AK-47s are being used.

In the name of a communist activist for the Soviet Union, he never received any financial support from his own invention.

During his later life, Kalashnikov always felt guilty for giving a tool to steal millions of lives on the planet. " Nothing is comparable to my mental pain and suffering. Over the years I have always questioned my conscience: Every time my gun takes a life, the death of they also contribute a part to the responsibility that I deserve to pay and compensate for the world . "

6. Thin sliced ​​potatoes - George Clum

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Potato chips are a popular dish all over the world created by George Clum, a chef at Moon's Lake House restaurant in 1853.

After being too thick and soft by other French fries, George Clum deliberately cut the potatoes so thin that he could not be thinner, then crunchier than usual. Very quickly, the dish became a movement and flourished everywhere.

George Clum named them " Saratoga Chips" . Unfortunately, he has never registered the patent for the formula, so many others have studied and sold similar products.

7. Air cushion - Christopher Cockerell

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Christopher Cockerell, owner of a water transport company, has invented a type of ship that is able to move quickly and smoothly like surfing on the water thanks to a number of unique and unique characteristics.

Cockerell has spent years studying, upgrading and completing this air cushion model, using objects such as vacuum cleaners and food boxes to test feasibility based on miniaturization.

When he came to design a wooden prototype for use as a model, he decided to collect full parameters and patent registration. But because there was no investor, Cockerell had to bitterly sell his invention to the British government for the purpose of making military weapons.

Immediately, the British government sealed the secret, making Cockerell unable to call for additional funding out of society.

Since then he has not received any profits from his invention, but soon after he was awarded the honorary doctorate and knighted status from the Queen of England.

8. Computer mouse - Douglas Engelbart

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Engelbart, an American engineer, invented a computer mouse in 1963 with the aim of supporting computer operations and management operations. So he never registered a patent for his invention.

It was not until the company he was working with - SRI - who patented the computer mouse and reassigned Apple at a price of 40,000 US dollars, was aware of their value but it was too late. . Engelbart's name has never been mentioned when it comes to indispensable items today.

9. Smiley face - Harvey Ball

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Harvey Ball - a freelance artist has designed an icon that expresses a classic yellow smiley face to represent a new Social Insurance Company. Only 10 minutes Harvey Ball has been completed and paid 45 USD (equivalent to 350 USD today).

That smiley icon was constantly attached to many things and clothes, posters as well as almost everything at the company. The profit brought to the company amounted to billions of dollars, but Ball received only such a small initial pay.

10. Puzzle game - Alexey Pajutnov

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Tetris, one of the most popular electronic games in history ever, has sold over 70 million globally, earning a few billion dollars in profit since its launch in 1984.

However, Alexey was a member of the Soviet Union, so the communist government did not allow all of its insiders to own or create private property, so they requisitioned their public assets. goverment.