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David Onstenk

HP HP: 2 patents #5,870 of 16,619Top 40%
📍 Loomis, CA: #139 of 328 inventorsTop 45%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,196,150 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6817374 Check valve Erik E. Erlandson 2004-11-16
6668849 Check valve Erik E. Erlandson 2003-12-30