Granted Patent
Utility
US 4,805,408 · App. 07/067,002
Stirling engine power regulation system
Inventors:
William T. Beale, David M. Berchowitz
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jun 29, 1987
Inventors
William T. Beale
David M. Berchowitz
Assignee (at issue)
SUNPOWER 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.