Granted Patent
Utility
US 4,936,091 · App. 07/317,166
Two stage rocket combustor
Inventor:
Leonard Schoenman
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Feb 28, 1989
Inventor
Leonard Schoenman
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.