Granted Patent
Utility
US 4,636,962 · App. 06/497,723
Microprocessor-controlled hoist system
Inventors:
Robert H. Broyden, Douglas E. Schenk, Raymond A. Newman
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: May 24, 1983
Inventors
Robert H. Broyden
Douglas E. Schenk
Raymond A. Newman
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.