Granted Patent
Utility
US 4,897,923 · App. 07/287,388
Automatic line feed head apparatus for a flexible line trimmer or the like
Inventor:
Imack L. Collins
Patented Case
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Granted: Feb 6, 1990
Filed: Dec 20, 1988
Inventor
Imack L. Collins
Assignee (at issue)
White Consolidated Industries, 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.