Granted Patent
Utility
US 4,367,259 · App. 06/287,353
Sound deadening material
Inventors:
Glenn E. Fulmer, Louis L. Wood
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Jul 27, 1981
Inventors
Glenn E. Fulmer
Louis L. Wood
Assignee (at issue)
W. R. Grace & Co.
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.