Granted Patent
Utility
US 4,887,707 · App. 07/206,087
Interlocking torque tube-pulley assembly for live roller line shaft conveyors
Inventor:
Jeffrey W. Harms
Patented Case
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Granted: Dec 19, 1989
Filed: Jun 13, 1988
Inventor
Jeffrey W. Harms
Assignee (at issue)
Ermanco Incorporated
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.