Granted Patent
Utility
US 4,275,844 · App. 06/143,583
Fuel injection nozzle
Inventors:
William A. Grgurich, Albert B. Niles, Kenneth W. Updyke
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Nov 30, 1979
Inventors
William A. Grgurich
Albert B. Niles
Kenneth W. Updyke
Assignee (at issue)
Caterpillar Tractor Co.
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.