Granted Patent
Utility
US 4,285,628 · App. 06/079,508
Grapple system
Inventor:
Edward M. Jankowski
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Sep 27, 1979
Inventor
Edward M. Jankowski
Assignee (at issue)
Du-Al Manufacturing Company, Division of Core Industries, Inc.
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.