Before he helped launch a revolution, Benjamin Franklin ... Declaration of Independence. The inventor of the Franklin wood-burning stove, the lightning rod, bifocal glasses, a chair that converted ...
The list of his inventions included: bifocals; the medical catheter ... Of the "Founding Fathers," Benjamin Franklin alone signed the three pivotal documents associated with the nation's birth ...
Inventor and Pioneer: Related News | Benjamin Franklin ... for pioneering inventions such as the flexible catheter, bifocals ...
The list of his inventions included: bifocals; the medical catheter ... Of the "Founding Fathers," Benjamin Franklin alone signed the three pivotal documents associated with the nation's birth ...
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