Granted Patent
Utility
US 4,312,495 · App. 06/139,048
Electrical transmission system conductor installation technique
Inventor:
David R. Dunbar
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Apr 10, 1980
Inventor
David R. Dunbar
Assignee (at issue)
Interpace 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.