Granted Patent
Utility
US 4,699,561 · App. 06/860,872
Engine interlock control system for a material handling implement
Inventor:
David Tee
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: May 8, 1986
Inventor
David Tee
Assignee (at issue)
J. I. Case Company
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.