ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,931, issued on Sept. 30, was assigned to HANWIT PRECISION INDUSTRIES LTD. (New Taipei, Taiwan).
"Two-stage fixing device" was invented by Ying-Chih Tseng (New Taipei, Taiwan), Ming-De Wu (New Taipei, Taiwan) and Ching-Kai Chang (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A two-stage fixing device includes a base member positioned on a preset circuit board, and a positioning fastener with a holder base thereof positioned on the base member. The holder base has first and second positioning blocks used to resist a first interface card and a second interface card that are plugged into respective preset electrical connectors on th...