Granted Patent
Utility
US 4,824,319 · App. 07/092,173
Loader coupler
Inventor:
Carroll H. Arnold
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Sep 2, 1987
Inventor
Carroll H. Arnold
Assignee (at issue)
Wain-Roy Holding, 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.