Granted Patent
Utility
US 4,273,371 · App. 06/050,180
Claw hook assembly
Inventors:
Edward R. Behnke, Floyd W. Sanderson
Patented Case
View Patent ↗
Granted: Jun 16, 1981
Filed: Jun 20, 1979
Inventors
Edward R. Behnke
Floyd W. Sanderson
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.