Granted Patent
Utility
US 4,463,933 · App. 06/437,131
Clutch/brake mechanism
Inventors:
Kenneth D. Schreyer, Alton H. Cooper
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Oct 27, 1982
Inventors
Kenneth D. Schreyer
Alton H. Cooper
Assignee (at issue)
Columbus McKinnon 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.