Granted Patent
Utility
US 6,421,998 · App. 09/592,724
Thruster device responsive to solar radiation
Inventors:
Patrick E. Frye, Joseph P. Carroll, James M. Shoji
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jun 13, 2000
Inventors
Patrick E. Frye
Joseph P. Carroll
James M. Shoji
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.