Granted Patent
Utility
US 4,694,034 · App. 06/868,382
Size composition
Inventor:
David Lewin
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: May 29, 1986
Inventor
David Lewin
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.