Granted Patent
Utility
US 4,313,029 · App. 06/080,309
Shielded mining cable
Inventor:
Stephen Bunish
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Oct 1, 1979
Inventor
Stephen Bunish
Assignee (at issue)
ANACONDA, 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.