Granted Patent
Utility
US 4,369,651 · App. 06/278,498
Non-contacting multi-function sensor arrangement
Inventor:
John F. Szentes
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Mar 3, 1981
Inventor
John F. Szentes
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.