Granted Patent
Utility
US 6,832,471 · App. 10/388,266
Expander cycle rocket engine with staged combustion and heat exchange
Inventor:
Ross Hewitt
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Mar 12, 2003
Inventor
Ross Hewitt
Assignee (at issue)
AEROJET-GENERAL 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.