Granted Patent
Utility
US 4,963,291 · App. 07/352,704
Insulating electromagnetic shielding resin composition
Inventor:
Robert M. Bercaw
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: May 10, 1989
Inventor
Robert M. Bercaw
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.