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Priority to ES0229453ApriorityCriticalpatent/ES229453A1/en
Publication of ES229453A1publicationCriticalpatent/ES229453A1/en
Improvements in the sulfactory machines, characterized in that it is provided with a cast iron cylinder and, on the other hand, another bronze cylinder, both carrying a cast iron guide piston, as well as a high pressure bronze sleeve that is it lodges in said guide piston in whose upper part and duly fixed it carries a piston of rubber. (Machine-translation by Google Translate, not legally binding)
ES0229453A1956-06-251956-06-25Improvements in the sulphating machines (Machine-translation by Google Translate, not legally binding)
ExpiredES229453A1
(en)