Granted Patent
Utility
US 4,326,744 · App. 06/018,421
Work hook device
Inventor:
William Long
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Mar 7, 1979
Inventor
William Long
Assignee (at issue)
Kennecott Holdings Company
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.