Granted Patent
Utility
US 5,151,472 · App. 07/565,394
Method of preparing rigid rod polymers in thermoplastic matrices
Inventor:
David Valia
Patented Case
View Patent ↗
Granted: Sep 29, 1992
Filed: Aug 10, 1990
Inventor
David Valia
Assignee (at issue)
General Dynamics Corporation, Convair Division
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.