Granted Patent
Utility
US 6,253,528 · App. 09/196,850
Apparatus for applying TPO adhesive to a single-ply roofing membrane
Inventors:
Michael J. Hubbard, Walter J. Kelly, Anthony Verrocchi, Raymond J. Weinert
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Nov 20, 1998
Inventors
Michael J. Hubbard
Walter J. Kelly
Anthony Verrocchi
Raymond J. Weinert
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.