Granted Patent
Utility
US 4,746,767 · App. 07/019,679
Shielded electrical cable construction
Inventor:
Joel D. Gruhn
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Feb 27, 1987
Inventor
Joel D. Gruhn
Assignee (at issue)
NEPTCO, INC.
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.