Inventor · disambiguated record
William James Campbell
Also filed as: CAMPBELL WILLIAM J · CAMPBELL WILLIAM JAMES
4 granted patents·23 citations·filing 2017–2018
71Inventor score
Files withCHAPIN MFG INC4
Top patents by PatentIndex Score
4 records- 0188USD823655SHand-held spreaderCHAPIN MFG INC·Filed 2017·Granted Jul 24, 2018·14 cites·1 claims
- 0276US10736263B2Controlled-release spreaderCHAPIN MFG INC·Filed 2018·Granted Aug 11, 2020·4 cites·12 claims
- 0353USD873865SParticulate spreaderCHAPIN MFG INC·Filed 2018·Granted Jan 28, 2020·5 cites·1 claims
- 0440US11483965B2Hand-held spreader having a base attachable to a plurality of different hoppersCHAPIN MFG INC·Filed 2018·Granted Nov 1, 2022·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →