KRUPP WILPUTTE CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4462869 Pipeline charging entry into coke ovensExpiredApr 25, 77Jul 31, 84[C10B]
4427494 Chuck door for coke oven pusher side door and heat radiation shieldExpiredFeb 18, 82Jan 24, 84[C10B]
4372820 Chuck door for coke oven pusher side door and heat radiation shieldExpiredFeb 17, 81Feb 08, 83[C10B]
4369095 Ascension pipe cover seat cleanerExpiredApr 29, 81Jan 18, 83[C10B]
4329203 Multiple stage combustion means for heating slot type coke ovensExpiredAug 29, 80May 11, 82[C10B]
4314888 Zone control of lean gas underfiring for coke ovensExpiredAug 07, 80Feb 09, 82[C10B]
4270762 Disperser seal and methodExpiredJul 25, 78Jun 02, 81[F16J]

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