Granted Patent
Utility
US 5,797,232 · App. 08/689,851
Gripping plate for attaching roofing membrane
Inventor:
Paul M. Larson
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Aug 15, 1996
Inventor
Paul M. Larson
Assignee (at issue)
ILLINOIS TOOL WORKS INC.
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.