Granted Patent
Utility
US 4,925,353 · App. 07/201,253
Drive fastening system
Inventor:
Michael N. Perugini
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: May 25, 1988
Inventor
Michael N. Perugini
Assignee (at issue)
Litton Systems, Inc.
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.