Individual holder
PUTNAM DAVID A
US·3 granted patents·4 citations·filing 2019–2021
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0182US11274783B1Sure-seal cleanout conduit valve assemblies and methodsPUTNAM DAVID A·Filed 2019·Granted Mar 15, 2022·4 cites·20 claims
- 0244US11536374B2Cleanout conduit valve assemblies and installationsPUTNAM DAVID A·Filed 2021·Granted Dec 27, 2022·0 cites·20 claims
- 0334USD1024273SValve flapperPUTNAM DAVID A·Filed 2021·Granted Apr 23, 2024·0 cites·1 claims
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