Revue Chronometrique (1874-1875, Vol 08, 19e annee), Journal des Horlogers, Scientifique et Pratique [Facsimile edition:] :: Number of documents found: 1


(15757) US Patent No. 156,313 - W. H. B. Schmied - Dust-Caps for Watch Regulators - Patented Oct. 27, 1874