Granted Patent
Utility
US 5,586,569 · App. 08/508,306
Pneumatic pressure regulator
Inventors:
John R. Hanning, Daniel C. Olmsted
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Jul 27, 1995
Inventors
John R. Hanning
Daniel C. Olmsted
Assignee (at issue)
Parker-Hannifin 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.