Granted Patent
Utility
US 4,419,056 · App. 06/285,700
Back-up for high voltage cable pressurizing system
Inventor:
Sigmund Ege
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Jul 22, 1981
Inventor
Sigmund Ege
Assignee (at issue)
International Standard Electric 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.