Granted Patent
Utility
US 4,512,304 · App. 06/543,722
Method and apparatus for controlling air to gas ratio in gas engines
Inventor:
Warren E. Snyder
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Oct 20, 1983
Inventor
Warren E. Snyder
Assignee (at issue)
Dresser Industries, 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.