Granted Patent
Utility
US 4,490,972 · App. 06/362,937
Hydrazine thruster
Inventors:
M. Edmund Ellion, Philip A. Donatelli
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Mar 29, 1982
Inventors
M. Edmund Ellion
Philip A. Donatelli
Assignee (at issue)
Hughes Aircraft 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.