Granted Patent
Utility
US 4,456,657 · App. 06/314,014
Metal-clad laminate adapted for printed circuits
Inventors:
Robert Cassat, Bruno Vignando
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Oct 22, 1981
Inventors
Robert Cassat
Bruno Vignando
Assignee (at issue)
Rhone-Poulenc Industries
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.