Granted Patent
Utility
US 4,335,176 · App. 06/209,442
Bonded needled fiber glass thermoplastic reinforced mats
Inventor:
John A. Baumann
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Nov 24, 1980
Inventor
John A. Baumann
Assignee (at issue)
PPG Industries, 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.