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Johan D. Spek

📍 Blomberg, DE: #38 of 62 inventorsTop 65%
Overall (All Time): #3,925,853 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4823025 Electronic circuit element with field-effect transistor operation applications of this circuit element, and substitution circuit for such an element 1989-04-18