Granted Patent
Utility
US 4,509,406 · App. 06/475,872
Pressure reducing valve for dead engine lowering
Inventor:
Kurt B. Melocik
Patented Case
View Patent ↗
Granted: Apr 9, 1985
Filed: Mar 16, 1983
Inventor
Kurt B. Melocik
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.