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In the 18th century he wrote, "I have only to move my eyes up or down... to see distinctly far or near" |
Benjamin Franklin
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FJ |
INVENTORS |
2005-12-27 |
#4902 |
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He said his 1744 stove prevented one from being "scorch'd before, while he's froze behind" |
Benjamin Franklin
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$400 |
DJ |
INVENTORS |
1999-06-17 |
#3419 |
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He refused to patent or to profit from his lightning rod, a device he first described in a 1751 article |
Benjamin Franklin
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$200 |
DJ |
INVENTORS |
1997-01-14 |
#2852 |
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In 1958 bifocal contact lenses were invented, some 175 years after he invented bifocal glasses |
Benjamin Franklin
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$300 |
J |
INVENTIONS |
1990-09-27 |
#1394 |