ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,029, issued on Sept. 9, was assigned to NINGBO WELL ELECTRIC APPLIANCE Co. LTD. (Ningbo, China).
"Rotary electrical plug" was invented by Guolin Yu (Ningbo, China) and Zhuoming Yu (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary electrical plug is provided. The rotary electrical plug includes a rotary base, a first insert, a second insert, a first conductive connection lug, and a second conductive connection lug. The first insert and the second insert are circumferentially limited and mounted on the rotary base, the first insert is provided with a first conductive circular portion, the second conductive connection lug is provi...