Granted Patent
Utility
US 4,360,539 · App. 06/275,070
Method for increasing resistance to treeing in polymeric insulating layer
Inventors:
Sandra G. Sachtleben, John Kirkland
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: Jun 18, 1981
Inventors
Sandra G. Sachtleben
John Kirkland
Assignee (at issue)
Aluminum Company of America
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.