Granted Patent
Utility
US 4,273,307 · App. 05/943,576
Clutch for valve actuator
Inventors:
Richard F. Malinski, John Sikorcin
Patented Case
View Patent ↗
Granted: Jun 16, 1981
Filed: Sep 18, 1978
Inventors
Richard F. Malinski
John Sikorcin
Assignee (at issue)
VAPOR CORP.
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.