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Perfectionnements apportés à la construction des chronographes-compteurs
March 18, 1889
Registered by Alfred-Jules-Fréderich Lugrin on January 12, 1889 and published on March 18. Transferred to Jules-Frédéric Jeanneret on January 7, 1890.
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Last Update:
Registered by Alfred-Jules-Fréderich Lugrin on January 12, 1889 and published on March 18. Transferred to Jules-Frédéric Jeanneret on January 7, 1890.