Granted Patent
Utility
US 5,494,339 · App. 08/133,646
Seed firming wheel for grain drills and the like
Inventors:
Eric Johnson, Roy E. Applequist
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Oct 7, 1993
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.