Granted Patent
Utility
US 4,833,013 · App. 07/189,451
Fibrous polymer insulation
Inventor:
Mark A. Schuetz
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: May 2, 1988
Inventor
Mark A. Schuetz
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.