Granted Patent
Utility
US 4,820,076 · App. 06/934,974
Staked stud torque retention ribs
Inventor:
Louis P. Rossigno
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Nov 25, 1986
Inventor
Louis P. Rossigno
Assignee (at issue)
AlliedSignal, 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.