Granted Patent
Utility
US 4,181,144 · App. 05/863,489
Hydraulically limited fuel injection nozzle
Inventor:
Ernest W. Landen
Patented Case
View Patent ↗
Granted: Jan 1, 1980
Filed: Dec 22, 1977
Inventor
Ernest W. Landen
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.