FR559E - Appareil photographique, genre détective, à escamotage des plaques s'opérant automatiquement par le fonctionnement de l'obturateur
- Google Patents
Appareil photographique, genre détective, à escamotage des plaques s'opérant automatiquement par le fonctionnement de l'obturateur
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CASTELIN EMILE LOUIS
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CASTELIN EMILE LOUIS
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Publication of FR559EpublicationCriticalpatent/FR559E/fr
FR559D1902-02-071902-05-30Appareil photographique, genre détective, à escamotage des plaques s'opérant automatiquement par le fonctionnement de l'obturateur
ExpiredFR559E
(fr)