Granted Patent
Utility
US 4,411,319 · App. 05/930,486
Sensitivity adjusting apparatus for tractor draft sensing and control system
Inventors:
Dale A. Wood, Lee E. Elfes
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Aug 2, 1978
Inventors
Dale A. Wood
Lee E. Elfes
Assignee (at issue)
Massey Ferguson Group Limited
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.