U.S. Commerce Dept. @CommerceGov
RT @usnistgov: The first patent filing at NIST, made in 1921, was for a means of powering a radio w/alternating current #NationalInventorsM… — PolitiTweet.org
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Thu May 04 15:09:28 +0000 2017
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U.S. Commerce Dept. @CommerceGov
RT @usnistgov: The first patent filing at NIST, made in 1921, was for a means of powering a radio w/alternating current #NationalInventorsM… — PolitiTweet.org