Granted Patent
Utility
US 5,110,148 · App. 07/628,405
Three-wheeled scooter with reciprocating treadle drive
Inventors:
LeRoy Stienbarger, Frank Gray
Patented Case
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Granted: May 5, 1992
Filed: Dec 14, 1990
Inventors
LeRoy Stienbarger
Frank Gray
Assignee (at issue)
Champion Toy Company
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.