Granted Patent
Utility
US 4,418,636 · App. 06/305,742
Position indicator for a truck body
Inventor:
Harlow H. Piper
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Sep 8, 1981
Inventor
Harlow H. Piper
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.