Granted Patent
Utility
US 4,244,356 · App. 05/916,130
Solar collector
Inventor:
Walter H. Barrett
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Jun 16, 1978
Inventor
Walter H. Barrett
Assignee (at issue)
Columbia Chase Corporation
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.