General Knowledge - Inventions - Discussion

Discussion :: Inventions - Section 1 (Q.No.40)

40. 

Who is the only U.S. President to invent and patent something?

[A]. Abraham Lincoln
[B]. Theodore Roosevelt
[C]. Thomas Jefferson
[D]. Rutherford B. Hayes

Answer: Option A

Explanation:

In 1849 Honest Abe invented a method to aid ships that got stuck on sandbars. He called it A Device for Buoying Vessels Over Shoals. It was never used.

Sailaja said: (Apr 13, 2018)  
Why not Thomas Jefferson?

He also invented swivel chair, cider wheel.

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