Granted Patent
Utility
US 5,310,021 · App. 08/018,813
Motor-driven, spring-returned rotary actuator
Inventor:
Peter C. Hightower
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Feb 18, 1993
Inventor
Peter C. Hightower
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.