Granted Patent
Utility
US 4,646,540 · App. 06/800,934
Cooling section for continuous web material impregnated with hot liquid
Inventors:
Albert J. Blackwood, Thomas R. Brady
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Nov 22, 1985
Inventors
Albert J. Blackwood
Thomas R. Brady
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.