Granted Patent
Utility
US 4,567,813 · App. 06/375,368
Pressure equalization of multiple valves
Inventor:
Kenneth D. Garnjost
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: May 6, 1982
Inventor
Kenneth D. Garnjost
Assignee (at issue)
Moog Inc.
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.