Assignee
HARPER TRUCK INC
US·5 granted patents·161 citations·filing 1982–1994
Top patents by PatentIndex Score
5 records- 0180US4860606ARatchet apparatus with hand truck assemblyHARPER TRUCK INC·Filed 1988·Granted Aug 29, 1989·31 cites·4 claims
- 0280US4494626ACombination stepladder and hand truck apparatusHARPER TRUCK INC·Filed 1982·Granted Jan 22, 1985·66 cites·8 claims
- 0364US5549317AFoldable hand truck apparatusHARPER TRUCK INC·Filed 1994·Granted Aug 27, 1996·36 cites·9 claims
- 0462USD278373SHand truckHARPER TRUCK INC·Filed 1982·Granted Apr 9, 1985·9 cites·1 claims
- 0541US4902187ADrum dolly attachment apparatusHARPER TRUCK INC·Filed 1988·Granted Feb 20, 1990·19 cites·4 claims
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