ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,334, issued on Nov. 25, was assigned to DORMAKABA AUSTRIA GMBH (Herzogenburg, Austria).
"Flat key for a locking cylinder" was invented by Heinz Navratil (Herzogenburg, Australia) and Markus Kornhofer (Herzogenburg, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flat key for a locking cylinder has substantially flat and approximately parallel flat key sides, a key rear section, and a key front section opposite thereto. The key front section has a toothing for positioning tumbler pins divided into core pins and housing pins and which are spring-loaded against the key front section in the direction of the key rear section and into correspon...