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PRODUCT DETAILS:
Introductory 2018 American Innovation $1 Coin - Uncirculated P Mint or D Mint
PRODUCT HIGHLIGHTS:
Select either 'P' - Philadelphia Mint or 'D' - Denver Mint from the drop-down options menu located above.
Over 6 million patents have been issued in the United States since the first one was bestowed on Samuel Hopkins on July 21, 1970. The patent was issues or the process of producing potash and pearlash. The former is an ingredient used in fertilizer, while the latter is a byproduct of producing potash. The patent, as well as all issued since, can be viewed at the Department of Commerce's United States Patent and Trademark Office (USPTO).