Granted Patent
Utility
US 4,337,797 · App. 06/178,778
Bimetallic valve spool
Inventor:
John T. Caruso
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Aug 18, 1980
Inventor
John T. Caruso
Assignee (at issue)
Moog Inc.
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.