Granted Patent
Utility
US 4,356,901 · App. 06/187,386
Support for a series of friction discs
Inventors:
Daniel Koehler, Walter O. Zajac
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: Sep 15, 1980
Inventors
Daniel Koehler
Walter O. Zajac
Assignee (at issue)
Rockwell International Corporation
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.