Granted Patent
Utility
US 4,877,943 · App. 07/282,250
Sealing device for elongate heater
Inventor:
Thomas Y. Oiwa
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Dec 8, 1988
Inventor
Thomas Y. Oiwa
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.