Granted Patent
Utility
US 4,807,529 · App. 07/118,375
Hot gas control system
Inventor:
Alson C. Frazer
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Nov 6, 1987
Inventor
Alson C. Frazer
Assignee (at issue)
Ford Aerospace & Communications 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.