Ajit Pai @AjitPai
On this date in 1936, @uspto granted Patent No. 2,046,837 to Henry Phillips for an invention which he described as a unique “means for uniting a screw with a driver.” One of the first customers was General Motors, which used it in its Cadillac line. https://t.co/vZ0N1e1JWw https://t.co/ChPIkvCRaY — PolitiTweet.org