Granted Patent
Utility
US 5,066,941 · App. 07/603,980
Internal key-in-ignition-warning/ignition switch
Inventor:
Daniel Lau
Patented Case
View Patent ↗
Granted: Nov 19, 1991
Filed: Oct 23, 1990
Inventor
Daniel Lau
Assignee (at issue)
United Technologies Automotive
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.