Granted Patent
Utility
US 4,452,847 · App. 06/442,479
Sheet material impregnated with a highly cross linked thermally stable epoxy composition
Inventor:
John T. Siemon
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Nov 17, 1982
Inventor
John T. Siemon
Assignee (at issue)
Westinghouse Electric Company LLC
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.