Granted Patent
Utility
US 4,471,764 · App. 06/334,015
Solar collectors
Inventors:
Scott Calvert, Forrest H. Dahl, George R. Smith
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Dec 23, 1981
Inventors
Scott Calvert
Forrest H. Dahl
George R. Smith
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.