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Individual
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Individual
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Priority to ES125772ApriorityCriticalpatent/ES125772A1/es
Publication of ES125772A1publicationCriticalpatent/ES125772A1/es
ES125772A1932-02-251932-02-25Un aparato especial y procedimiento para evitar la falsificación de todo documento, tanto público como privado.
ExpiredES125772A1
(es)