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Andrew K. Dufresne

📍 Richmond, NZ: #1 of 5 inventorsTop 20%
Overall (All Time): #3,737,348 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5495750 Hydrostatic drain testing machine — 1996-03-05