Granted Patent
Utility
US 4,844,407 · App. 07/205,352
Valve override mechanism
Inventor:
Gerald S. Baker
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Jun 18, 1988
Inventor
Gerald S. Baker
Assignee (at issue)
Cameron Iron Works USA, 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.