Ajit Pai @AjitPai
On this date in 1887, Dorr E. Felt received a patent for what he called a Comptometer. It was the "first practical,… https://t.co/zMDR2VDsHh — PolitiTweet.org
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Thu Oct 11 17:08:06 +0000 2018
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Ajit Pai @AjitPai
On this date in 1887, Dorr E. Felt received a patent for what he called a Comptometer. It was the "first practical,… https://t.co/zMDR2VDsHh — PolitiTweet.org