Granted Patent
Utility
US 5,092,725 · App. 07/419,401
Locking fastener
Inventor:
Robert W. Aittama
Patented Case
View Patent ↗
Granted: Mar 3, 1992
Filed: Oct 10, 1989
Inventor
Robert W. Aittama
Assignee (at issue)
Ford Motor Company
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.