Granted Patent
Utility
US 4,549,446 · App. 06/577,193
Motorized valve actuator
Inventor:
Charles F. Beeson
Patented Case
View Patent ↗
Granted: Oct 29, 1985
Filed: Feb 6, 1984
Inventor
Charles F. Beeson
Assignee (at issue)
Johnson Service Company
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.