Granted Patent
Utility
US 4,524,948 · App. 06/530,510
Electrically controlled pressure transducer valve
Inventor:
Dale G. Hall
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Sep 9, 1983
Inventor
Dale G. Hall
Assignee (at issue)
RANCO CO., Ltd.
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.