Granted Patent
Utility
US 4,533,800 · App. 06/559,716
Reversible rotary actuator
Inventor:
Gerald R. Parsons
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Dec 9, 1983
Inventor
Gerald R. Parsons
Assignee (at issue)
Barber-Coleman 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.