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Individual
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Individual
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Priority to ES87522ApriorityCriticalpatent/ES87522A1/en
Publication of ES87522A1publicationCriticalpatent/ES87522A1/en
ES87522A1923-11-291923-11-29
Procedure to prevent the deposit of solid scale in steam boilers, vaporizers, reheaters and similar appliances.
ExpiredES87522A1
(en)