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Georges Frederic Roskopf : ウィキペディア英語版 | Georges Frederic Roskopf Georges F. Roskopf (1813–1889), the inventor of the pin-pallet escapement, was born in Germany and became a naturalized Swiss citizen. == Early life and introduction ==
In 1829, when Roskopf was 16, he went to La Chaux-de-Fonds and began training in commerce with F. Mairet & Sandoz, who dealt in ironmongery and watch parts. In 1833 he decided to become a watchmaker and went as an apprentice to J. Biber, in La Chaux-de-Fonds, to learn watchmaking.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Georges Frederic Roskopf」の詳細全文を読む
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