Granted Patent
Utility
US 4,363,231 · App. 06/262,062
Door lock
Inventor:
John R. Kaveney, Jr.
Patented Case
View Patent ↗
Granted: Dec 14, 1982
Filed: Jul 7, 1980
Inventor
John R. Kaveney, Jr.
Assignee (at issue)
Caterpillar Tractor Co.
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.