Granted Patent
Utility
US 4,986,300 · App. 07/534,518
Bonnet nut with improved safety characteristics
Inventors:
Alan D. Bremers, Melvin L. Osgood
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Jun 6, 1990
Inventors
Alan D. Bremers
Melvin L. Osgood
Assignee (at issue)
Fisher Controls International LLC
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.