Granted Patent
Utility
US 4,428,361 · App. 05/694,959
Solar heating shingle roof structure
Inventor:
George T. Straza
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Jun 11, 1976
Inventor
George T. Straza
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.