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Geschwind Friedrich
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Geschwind Friedrich
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Application filed by Geschwind FriedrichfiledCriticalGeschwind Friedrich
Priority to ES18616ApriorityCriticalpatent/ES18616A1/en
Publication of ES18616A1publicationCriticalpatent/ES18616A1/en
A mechanical procedure for the display of advertisements projected with light and combined with the display of animated light projections alternated with other fixed ones.