Granted Patent
Utility
US 4,469,357 · App. 06/118,867
Composite coupling
Inventor:
Charles L. Martin
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Feb 6, 1980
Inventor
Charles L. Martin
Assignee (at issue)
Raychem Limited
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.