Granted Patent
Utility
US 4,472,243 · App. 06/595,880
Sheet type roofing
Inventors:
Alfredo A. Bondoc, Eugene J. Flood, Frederick W. Sieling
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Apr 2, 1984
Inventors
Alfredo A. Bondoc
Eugene J. Flood
Frederick W. Sieling
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.