Granted Patent
Utility
US 4,951,978 · App. 07/376,375
Heat-recoverable composition coupling device
Inventor:
Charles L. Martin
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Aug 1, 1989
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.