Granted Patent
Utility
US 5,332,353 · App. 08/018,028
Quick coupler for excavation equipment
Inventor:
Carroll H. Arnold
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Feb 16, 1993
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.