Granted Patent
Utility
US 4,911,973 · App. 07/167,761
Reinforcement blanket formed by sewing together layers of fiber-reinforcement materials
Inventor:
Sidney G. Dunbar
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Mar 14, 1988
Inventor
Sidney G. Dunbar
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.