Granted Patent
Utility
US 5,997,063 · App. 09/034,506
J-hook with shank portion having oval-shaped transverse cross-section
Inventor:
Clarence L. McCraw
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Mar 4, 1998
Inventor
Clarence L. McCraw
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.