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Priority claimed from CH200569Aexternal-prioritypatent/CH559923A/fr
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Publication of SU381243A3publicationCriticalpatent/SU381243A3/ru
Procede de fixation de l'extremite interieure d'un spiral d'horlogerie a une virole, dispositif pour la mise en oeuvre de ce procede et spiral virole obtenu par ce procede.