Granted Patent
Utility
US 3,934,738 · App. 05/456,523
Tool connecting
Inventor:
Carroll H. Arnold
Patented Case
View Patent ↗
Granted: Jan 27, 1976
Filed: Apr 1, 1974
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.