Granted Patent
Utility
US 6,735,946 · App. 10/324,699
Direct illumination free piston stirling engine solar cavity
Inventors:
William Otting, Patriok E. Frye
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Dec 20, 2002
Inventors
William Otting
Patriok E. Frye
Assignee (at issue)
The Boeing Company
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.