Inventor · disambiguated record
John Clayton Campbell
Also filed as: CAMPBELL JOHN · CAMPBELL JOHN C · CAMPBELL JOHN CLAYTON · CAMPBELL JR JOHN C
13 granted patents·1 pending application·195 citations·filing 1987–2021
92Inventor score
Top patents by PatentIndex Score
14 records- 0196US9797163B2Identification module for key making machineHILLMAN GROUP INC·Filed 2014·Granted Oct 24, 2017·22 cites·30 claims
- 0295US6839449B1Key identification systemHILLMAN GROUP INC·Filed 2000·Granted Jan 4, 2005·73 cites·17 claims
- 0392US10301844B2Identification module for key making machineHILLMAN GROUP INC·Filed 2017·Granted May 28, 2019·5 cites·18 claims
- 0491US10400474B1Identification module for key making machineHILLMAN GROUP INC·Filed 2019·Granted Sep 3, 2019·4 cites·20 claims
- 0584US10577830B2Identification module for key making machineHILLMAN GROUP INC·Filed 2019·Granted Mar 3, 2020·2 cites·30 claims
- 0678US11642744B2Identification module for key making machineHILLMAN GROUP INC·Filed 2021·Granted May 9, 2023·0 cites·19 claims
- 0775US6839451B2Key identification systemCAMPBELL JOHN·Filed 2002·Granted Jan 4, 2005·34 cites·25 claims
- 0873US6836553B2Key identification systemHILLMAN GROUP INC·Filed 2001·Granted Dec 28, 2004·31 cites·20 claims
- 0971US2020149315A1Identification module for key making machineHILLMAN GROUP INC·Filed 2020·Application pending·0 cites
- 1059US9761106B1Anti-intrusion device for simulating gun cockingCAMPBELL JOHN C·Filed 2016·Granted Sep 12, 2017·1 cites·20 claims
- 1148US4730697ASeat device for a ladderCAMPBELL JOHN C·Filed 1987·Granted Mar 15, 1988·17 cites·4 claims
- 1244US5526868ACasting process with forced and controlled vortex at sprue intakeCAMPBELL JOHN·Filed 1994·Granted Jun 18, 1996·6 cites·4 claims
- 1335US8327766B2Energetic linear timing elementTWAROG JR JOSEPH W·Filed 2004·Granted Dec 11, 2012·0 cites·27 claims
- 1429US8562059B2Seat for a bi-directional work vehicleLUKAC J BRADLEY·Filed 2011·Granted Oct 22, 2013·0 cites·17 claims
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