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On July 31, 1790 Samuel Hopkins was issued the first patent for a process of making potash. Potash is an ingredient used in fertilizer. The patent was signed by President George Washington. Hopkins was born in Vermont, but was living in Philadelphia, PA when the patent was granted.

* Added - The first patent issued in what is now the US - In 1643 the Great and General Court of Boston issued the first patent to Joseph Jenkes of Lynn, Massachusetts for an improved water wheel.

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12y ago
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15y ago

the first patent was given to Samuel Hopkins in 1790 for making pots and pearls ashes used in soapmaking

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11y ago

Samuel Hopkins of Vermont received the first US patent in 1790, for "making of pot ash and pearl ash by a new apparatus and process."

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Q: What was the first US patent issued for?
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Related questions

What year was the first US Patent issued?

1790.


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Samuel Hopkins was issued US Patent #1 on April 10, 1790. The patent had no official title, but was issued as a letter signed by George Washington. The letter verifies that he "hath discovered an improvement, not known or used before" related to the making of potash, an ingredient used in fertilizer.


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