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John W. Sparks

PO Polaroid: 1 patents #513 of 898Top 60%
📍 Boston, MA: #2,667 of 5,993 inventorsTop 45%
🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%
Overall (All Time): #2,370,522 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4267324 Process for preparing 4-aminopyrazolo-(3,4-d)pyrimidine Henry Bader 1981-05-12
4225705 Process for synthesizing thiacyanine dyes Henry Bader 1980-09-30