Ajit Pai @AjitPai
RT @AjitPai: OTD in 1885, @uspto granted Marcus Thompson a patent for a "Gravity Switch-Back Railway," a "means of pleasure and amusement"… — PolitiTweet.org
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Wed Dec 22 17:16:35 +0000 2021
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RT @AjitPai: OTD in 1885, @uspto granted Marcus Thompson a patent for a "Gravity Switch-Back Railway," a "means of pleasure and amusement"… — PolitiTweet.org