ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,917, issued on Sept. 15, was assigned to JUNGHWA TECH Co. LTD. (Daegu, South Korea).
"Door lock equipped with indicator" was invented by Kwangtaek Lee (Daegu, South Korea) and Daechul Kang (Daegu, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a door lock equipped with an indicator, the door lock being configured such that a first small spindle support is rotated forwards along a spiral guide groove when a lock button assembly of a body assembly is pressed, a small spindle cam is rotated along the first small spindle support during operation of the first small spindle support, an indicator cam coupled to an outer spring cag...