Granted Patent
Utility
US 4,565,469 · App. 06/670,951
Cribbing
Inventor:
Nicholas Chlumecky
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Nov 13, 1984
Inventor
Nicholas Chlumecky
Assignee (at issue)
Commercial Shearing, 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.