Granted Patent
Utility
US 4,142,511 · App. 05/798,951
Solar radiation collector devices and systems
Inventors:
Ralph O. Doughty, Donald W. Goodwin
Patented Case
View Patent ↗
Granted: Mar 6, 1979
Filed: May 20, 1977
Inventors
Ralph O. Doughty
Donald W. Goodwin
Assignee (at issue)
General Dynamics 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.