HD

Helga M. Van Dyke

UN Unknown: 1 patents #29,356 of 83,584Top 40%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,008,889 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4494554 Skin test device using I.C. comparator circuit Rudolph C. DeGroot, Sr. 1985-01-22