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Ancient Inventions

Polaroid

https://en.wikipedia.org/wiki/Polaroid_Corporation...

Telegraph Key
Telegraph key is a general term for any switching device used primarily to send Morse code. Similar keys are used for all forms of manual telegraphy, such as in ‘wire’ or electrical telegraph and ‘wireless’ or radio telegraphy.
https://en.wikipedia.org/wiki/Telegraph_key

Radar

https://en.wikipedia.org/wiki/Radar

List of inventors

fact-index.com/l/li/list_of_inventors.h...

Fertilizer

https://en.wikipedia.org/wiki/Fertilizer

Plastic

https://en.wikipedia.org/wiki/Plastic

Aqua-Lung

https://en.wikipedia.org/wiki/Aqua-lung

Reginald Fessenden

https://en.wikipedia.org/wiki/Reginald_Fessenden

Robert Fulton
Robert Fulton (November 14, 1765 – February 24, 1815) was an American engineer and inventor who is widely credited with developing a commercially successful steamboat called Clermont.
https://en.wikipedia.org/wiki/Robert_Fulton

William Cullen

https://en.wikipedia.org/wiki/William_Cullen

Airship

https://en.wikipedia.org/wiki/Airship

Light bulb

https://en.wikipedia.org/wiki/Incandescent_light_b...

George Washington Carver
George Washington Carver was born into slavery
https://en.wikipedia.org/wiki/George_Washington_Ca...

Vacuum tube

https://en.wikipedia.org/wiki/Vacuum_tube

Heinrich Göbel

https://en.wikipedia.org/wiki/Heinrich_G%C3%B6bel

Traffic light

https://en.wikipedia.org/wiki/Traffic_light

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