ER

Eilif Risberg

IE International Standard Electric: 1 patents #147 of 567Top 30%
📍 Almadén, ES: #3 of 5 inventorsTop 60%
Overall (All Time): #4,010,809 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4501956 Electrical resistance heating element Hans A. Bergersen 1985-02-26