James Brown & Sons, Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4326770 Electrode clampExpiredNov 24, 80Apr 27, 82[H01R]
4314695 Cooling elements for furnacesExpiredJan 07, 80Feb 09, 82[F27B]
4310147 Cooled components for furnacesExpiredAug 13, 79Jan 12, 82[C21B]
4201372 Blast furnace tuyereExpiredMay 09, 79May 06, 80[C21B]

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