U.S. Commerce Dept. @CommerceGov
RT @uspto: #OTD in 1790: Signed by George Washington, the first U.S. patent was issued to Samuel Hopkins for the process of making potash.… — PolitiTweet.org
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Tue Jul 31 18:10:40 +0000 2018
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U.S. Commerce Dept. @CommerceGov
RT @uspto: #OTD in 1790: Signed by George Washington, the first U.S. patent was issued to Samuel Hopkins for the process of making potash.… — PolitiTweet.org