Granted Patent
Utility
US 4,286,669 · App. 06/041,976
Draft sensing apparatus
Inventor:
Jean J. Lasoen
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: May 24, 1979
Inventor
Jean J. Lasoen
Assignee (at issue)
Massey-Ferguson Services, N.V.
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.