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Individual
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Individual
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Priority to ES32193ApriorityCriticalpatent/ES32193A1/en
Publication of ES32193A1publicationCriticalpatent/ES32193A1/en
ES32193A1903-07-201903-07-20
A procedure to prevent counterfeiting of portal cards and similar objects and to award prizes to purchasers.
ExpiredES32193A1
(en)
A procedure for the manufacture of papers, cardboard and cardboard with special musical signs, applicable to instruments called zithers, citharines and harps-zithers.