Inventor · disambiguated record
David L. Campbell
Also filed as: CAMPBELL DAVID · CAMPBELL DAVID L · CAMPBELL DAVID LESTER
8 granted patents·2 pending applications·237 citations·filing 1977–2022
88Inventor score
Top patents by PatentIndex Score
10 records- 0195US4936884AGrass cutting deviceODER WESLEY R·Filed 1988·Granted Jun 26, 1990·89 cites·21 claims
- 0286US4174096AFenceYOVAN ALEX·Filed 1977·Granted Nov 13, 1979·53 cites·25 claims
- 0380US4429818ACarrier racks for bicyclesCANNONDALE CORP·Filed 1981·Granted Feb 7, 1984·35 cites·10 claims
- 0470USD271759SCarrier rack for bicyclesCANNONDALE CORP·Filed 1981·Granted Dec 13, 1983·11 cites·1 claims
- 0563US9261320B2Magazine block for dry fire practiceCAMPBELL DAVID L·Filed 2014·Granted Feb 16, 2016·9 cites·20 claims
- 0659US4712650AHood conveying apparatus having an outwardly reaching basketPRONTO SERVICE FACILITIES INC·Filed 1986·Granted Dec 15, 1987·18 cites·18 claims
- 0757US4118000AApparatus for supporting a member from a drop-tile ceilingBALLAS GEORGE C·Filed 1977·Granted Oct 3, 1978·22 cites·12 claims
- 0840US12383078B2Play yard with removable padded floorDREAM ON ME INC·Filed 2022·Granted Aug 12, 2025·0 cites·15 claims
- 0935US2024057786A1Play yard with removable padded floorDREAM ON ME INC·Filed 2022·Application pending·0 cites
- 1035US2024057784A1Play yard with removable padded floorDREAM ON ME INC·Filed 2022·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →