Granted Patent
Utility
US 6,004,645 · App. 08/706,027
Single-ply membrane roofing system
Inventor:
Michael J. Hubbard
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Aug 30, 1996
Inventor
Michael J. Hubbard
Assignee (at issue)
Omnova Solutions, 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.