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Application filed by Guglielmo RiccomagnofiledCriticalGuglielmo Riccomagno
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Publication of AT178140BpublicationCriticalpatent/AT178140B/de
AT178140D1948-08-281949-08-29Verfahren und Projektor zum Beleuchten von relativ großen Flächen, wie öffentlichen Plätzen, Straßen u. dgl.
AT178140B
(de)