Assignee
HARPER TRUCKS INC
US·16 granted patents·4 pending applications·284 citations·filing 1982–2025
Top patents by PatentIndex Score
20 records- 0194US6758482B2Multipurpose storage and transport cartHARPER TRUCKS INC·Filed 2002·Granted Jul 6, 2004·72 cites·21 claims
- 0292US11472461B2Two position hand truckHARPER TRUCKS INC·Filed 2020·Granted Oct 18, 2022·9 cites·5 claims
- 0389US11560168B2Four position hand truckHARPER TRUCKS INC·Filed 2020·Granted Jan 24, 2023·4 cites·6 claims
- 0488US6308967B1Dual hand truckHARPER TRUCKS INC·Filed 2000·Granted Oct 30, 2001·59 cites·8 claims
- 0584US6419434B1Adjustable length cargo braceHARPER TRUCKS INC·Filed 2000·Granted Jul 16, 2002·46 cites·9 claims
- 0682US12221148B2Four position hand truckHARPER TRUCKS INC·Filed 2023·Granted Feb 11, 2025·1 cites·1 claims
- 0779US2025313250A1Four position hand truckHARPER TRUCKS INC·Filed 2025·Application pending·0 cites
- 0876US10864933B2Four position hand truckHARPER TRUCKS INC·Filed 2018·Granted Dec 15, 2020·5 cites·10 claims
- 0971US2025376206A1Mechanism for Manually Actuating the Simultaneous and Symmetrical Inboard Motion of Opposing MembersHARPER TRUCKS INC·Filed 2025·Application pending·0 cites
- 1069USD354601SFoldable hand truck assemblyHARPER TRUCKS INC·Filed 1993·Granted Jan 17, 1995·14 cites·1 claims
- 1168US12240517B2Two position hand truckHARPER TRUCKS INC·Filed 2024·Granted Mar 4, 2025·1 cites·5 claims
- 1264US10703397B1Hand truck with folding toe plateHARPER TRUCKS INC·Filed 2019·Granted Jul 7, 2020·3 cites·4 claims
- 1361US2023117807A1Two Position Hand TruckHARPER TRUCKS INC·Filed 2022·Application pending·0 cites
- 1456US5749588AComposite hand truckHARPER TRUCKS INC·Filed 1996·Granted May 12, 1998·29 cites·8 claims
- 1553US2024067245A1Retractable and extendable hand truck base plate assembly with a securing and releasing mechanismHARPER TRUCKS INC·Filed 2023·Application pending·0 cites
- 1646USD395105SHand truckHARPER TRUCKS INC·Filed 1997·Granted Jun 9, 1998·6 cites·1 claims
- 1746US4433816AWire guide and retainer assemblyHARPER TRUCKS INC·Filed 1982·Granted Feb 28, 1984·9 cites·10 claims
- 1836USD384467SHand truck side frameHARPER TRUCKS INC·Filed 1996·Granted Sep 30, 1997·3 cites·1 claims
- 1935US6481727B1Hand truck toe plate and method of manufactureHARPER TRUCKS INC·Filed 1999·Granted Nov 19, 2002·12 cites·8 claims
- 2034US5253881AHand truck stair crawler assemblyHARPER TRUCKS INC·Filed 1992·Granted Oct 19, 1993·11 cites·3 claims
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