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Individual
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Individual
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Priority to ES556171ApriorityCriticalpatent/ES8707072A2/en
Publication of ES556171A0publicationCriticalpatent/ES556171A0/en
Publication of ES8707072A2publicationCriticalpatent/ES8707072A2/en
ES556171A1986-06-181986-06-18Improvements introduced in the patent of invention n 531,563 (Machine-translation by Google Translate, not legally binding)
ExpiredES8707072A2
(en)