Granted Patent
Utility
US 4,005,689 · App. 05/573,509
Fuel injection system controlling air/fuel ratio by intake manifold gas sensor
Inventor:
Daniel Barnard
Patented Case
View Patent ↗
Granted: Feb 1, 1977
Filed: Apr 30, 1975
Inventor
Daniel Barnard
Assignee (at issue)
Bendix Limited
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.