Granted Patent
Utility
US 5,676,429 · App. 08/484,447
Seed firming wheel for grain drills and the like
Inventors:
Eric Johnson, Roy E. Applequist
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Jun 7, 1995
Inventors
Eric Johnson
Roy E. Applequist
Assignee (at issue)
Great Plains Manufacturing, 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.