Otis King (nonfiction): Revision history

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7 June 2023

14 September 2019

  • curprev 06:3006:30, 14 September 2019Admin talk contribs 1,303 bytes +1,303 Created page with "'''Otis Carter Formby King''' (1876–1944) was a grocer and engineer in London who invented and produced a cylindrical slide rule with helical scales, primarily for business..."