Granted Patent
Utility
US 3,934,866 · App. 05/513,060
Special-purpose spring retaining rings
Inventors:
Omar Piatti, Wally Berliner
Patented Case
View Patent ↗
Granted: Jan 27, 1976
Filed: Oct 8, 1974
Inventors
Omar Piatti
Wally Berliner
Assignee (at issue)
Waldes Kohinoor, 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.