Granted Patent
Utility
US 5,213,747 · App. 07/750,042
Methods of making fiber-reinforced resin molds
Inventor:
William L. Lippert, Jr.
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Aug 27, 1991
Inventor
William L. Lippert, Jr.
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.