SS

Spencer S. Swinton

ES Educational Testing Service: 1 patents #128 of 260Top 50%
📍 Levittown, PA: #269 of 461 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,113,342 of 4,157,543Top 100%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4206557 Teaching system employing binary light-sensitive responders — 1980-06-10