- Section 1
| 32. |
Who is the only U.S. President to invent and patent something? |
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| 33. |
What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin? |
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| 34. |
Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent? |
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| 35. |
What Thomas Davenport invented? |
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