Granted Patent
Utility
US 4,550,645 · App. 06/605,019
Thin valve plate for a hydraulic unit
Inventor:
Richard Beck, Jr.
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Apr 27, 1984
Inventor
Richard Beck, Jr.
Assignee (at issue)
Sundstrand 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.