U.S. Commerce Dept. @CommerceGov
RT @uspto: Granville Woods worked on improving electric railway cars & received a #patent for an electric railway conduit in 1893. #BlackHi… — PolitiTweet.org
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Thu Feb 16 15:26:15 +0000 2017
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U.S. Commerce Dept. @CommerceGov
RT @uspto: Granville Woods worked on improving electric railway cars & received a #patent for an electric railway conduit in 1893. #BlackHi… — PolitiTweet.org