Granted Patent
Utility
US 5,831,542 · App. 08/883,853
Air seeder blockage monitoring system
Inventors:
John C. Thomas, Douglas L. Hauck, Christopher J. Skarie, Jon Thomas Jacobson, John D. Paulson, Trevor D. Fuss, Daryl N. Roehrich
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Jun 27, 1997
Inventors
John C. Thomas
Douglas L. Hauck
Christopher J. Skarie
Jon Thomas Jacobson
John D. Paulson
Trevor D. Fuss
Daryl N. Roehrich
Assignee (at issue)
DEERE & 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.