Granted Patent
Utility
US 4,474,078 · App. 06/390,239
Valve operator de-clutch mechanism
Inventors:
Walter J. Denkowski, Raymond D. Regan
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Jun 21, 1982
Inventors
Walter J. Denkowski
Raymond D. Regan
Assignee (at issue)
Philadelphia Gear 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.