Granted Patent
Utility
US 4,845,392 · App. 06/473,888
Hybrid linear actuator
Inventor:
Alan L. Mumbower
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Mar 10, 1983
Inventor
Alan L. Mumbower
Assignee (at issue)
Eaton Corporation
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.