Granted Patent
Utility
US 4,535,810 · App. 06/593,944
Electrically controlled valves
Inventors:
Richard A. Duder, Allan B. Corral
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Mar 27, 1984
Inventors
Richard A. Duder
Allan B. Corral
Assignee (at issue)
Dynamic Valves, 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.