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Richard Learned

North Chatham, MA: #1 of 4 inventorsTop 25%
Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #3,483,472 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6758273 Low-flow groundwater sampling system — 2004-07-06

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