Granted Patent
Utility
US 4,313,626 · App. 06/109,102
Coupling arrangements
Inventor:
William C. W. Duncan
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Feb 2, 1980
Inventor
William C. W. Duncan
Assignee (at issue)
Plessey Handel Und Investments AG
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.