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Optische Werke G Rodenstock
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Optische Werke G Rodenstock
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Publication of ES322654A1publicationCriticalpatent/ES322654A1/es
Perfeccionamientos introducidos en, o relacionados con vi- drieras atenuadoras de la luz y eliminadora de una parte apreciable de la radiacion calorifica.
Διακοσμητικον εκ πλαστικης υλης περικαλυμμα των υαλινων ηλεκτρικων λαμπτηρων φθοριου, προκαλουν διαχυτον, διαθλασιν και ακτινοβολιαν του φωτος και τροπος εφαρμογης αυτου.