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Publication of FR411083ApublicationCriticalpatent/FR411083A/fr
B44F1/00—Designs or pictures characterised by special or unusual light effects
B44F1/06—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings
FR411083D1909-12-111909-12-14Plaques transparentes en minerais naturels et procédé pour leur obtention
ExpiredFR411083A
(fr)