Granted Patent
Utility
US 5,382,109 · App. 07/921,931
Coupling device
Inventor:
Oscar Nyman
Patented Case
View Patent ↗
Granted: Jan 17, 1995
Filed: Jul 29, 1992
Inventor
Oscar Nyman
Assignee (at issue)
The Hammerblow Corporation
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.