Granted Patent
Utility
US 4,086,804 · App. 05/735,249
Precision pneumatic pressure supply system
Inventor:
Joseph H. Ruby
Patented Case
View Patent ↗
Granted: May 2, 1978
Filed: Oct 26, 1976
Inventor
Joseph H. Ruby
Assignee (at issue)
Sperry Rand 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.