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Individual
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Individual
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Priority to ES57785ApriorityCriticalpatent/ES57785A1/en
Publication of ES57785A1publicationCriticalpatent/ES57785A1/en
ES57785A1914-03-201914-03-20
Improvements in the method, with its corresponding means, to dry and heat sand, stone, rubble or other materials.
ExpiredES57785A1
(en)