Granted Patent
Utility
US 4,824,628 · App. 07/145,944
Method of making an epoxy mold
Inventor:
William A. Curfman
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Jan 20, 1988
Inventor
William A. Curfman
Assignee (at issue)
General Motors 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.