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Individual
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Individual
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Priority to ES528ApriorityCriticalpatent/ES528A1/en
Publication of ES528A1publicationCriticalpatent/ES528A1/en
ES528A1879-08-291879-08-29
A system of curved wedge with rotary movement applicable as a member to tighten, close or join any member or part together.
ExpiredES528A1
(en)
A new system for using compressed air that has already lent its motor work for the production of cold, mainly applicable to the preservation of substances.
Prefabricated monoblock steel housing modules, structurally resistant for movement and transport, which are joined together by a quick anchoring system to form a building that is quick and easy to assemble and disassemble.
A chemical procedure to render the fumes from the calcination of coppery iron pyrite in the open air harmless, increase its copper yield and reduce iron consumption by using ammonia in its aqueous solutions.