Granted Patent
Utility
US 4,727,962 · App. 06/913,835
Movable sensing apparatus
Inventor:
David E. Nelson
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Sep 29, 1986
Inventor
David E. Nelson
Assignee (at issue)
Caterpillar Inc.
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.