Granted Patent
Utility
US 6,681,868 · App. 10/340,432
Rip strip primary tillage system
Inventors:
Michael G. Kovach, Rickey Gerber
Patented Case
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Granted: Jan 27, 2004
Filed: Jan 10, 2003
Inventors
Michael G. Kovach
Rickey Gerber
Assignee (at issue)
Case GmbH
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.