Granted Patent
Utility
US 4,457,271 · App. 06/404,240
Automatically-controlled gaseous fuel priming system for internal combustion engines
Inventor:
Ralph Fitch
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Aug 2, 1982
Inventor
Ralph Fitch
Assignee (at issue)
Outboard Marine 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.