Granted Patent
Utility
US 4,284,470 · App. 06/079,192
High-strength roofing products using novel glass fiber mats
Inventor:
Alfredo A. Bondoc
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Sep 26, 1979
Inventor
Alfredo A. Bondoc
Assignee (at issue)
GAF Corporation
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.