Granted Patent
Utility
US 4,291,154 · App. 06/130,015
Process for the production of polyamide silicate resinous product
Inventor:
David H. Blount
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Mar 13, 1980
Inventor
David H. Blount
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.