Granted Patent
Utility
US 4,836,088 · App. 06/767,764
Directional control valve and regeneration valve
Inventor:
David T. Seabaugh
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Aug 21, 1985
Inventor
David T. Seabaugh
Assignee (at issue)
Rome Industries, 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.