
Ajit Pai @AjitPai
On this date in 1931, the @uspto granted Patent 1,835,031 for a "concentric conducting system”--what we know today… https://t.co/kKQkjJFhF2 — PolitiTweet.org
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Sun Dec 09 02:32:19 +0000 2018
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Likely AvailableAjit Pai @AjitPai
On this date in 1931, the @uspto granted Patent 1,835,031 for a "concentric conducting system”--what we know today… https://t.co/kKQkjJFhF2 — PolitiTweet.org