U.S. Commerce Dept. @CommerceGov
RT @TodaysDocument: We couldn't resist this great color patent illustration, so here is the "Harp Guitar" patented at @uspto #TDiH 1831: ht… — PolitiTweet.org
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Thu Oct 06 22:04:41 +0000 2016
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U.S. Commerce Dept. @CommerceGov
RT @TodaysDocument: We couldn't resist this great color patent illustration, so here is the "Harp Guitar" patented at @uspto #TDiH 1831: ht… — PolitiTweet.org