Granted Patent
Utility
US 4,133,970 · App. 05/645,387
Electrical insulation system
Inventor:
George E. Lusk
Patented Case
View Patent ↗
Granted: Jan 9, 1979
Filed: Dec 30, 1975
Inventor
George E. Lusk
Assignee (at issue)
Joslyn Mfg. and Supply Co.
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.