发明名称 Mechanical watch movement
摘要 A balance spring support which is blanked out or stamped to a shape such as to embrace at least two faces of the outer end of the balance spring. A bond is used for securing said outer end of the balance spring to at least one of said faces. The support is detachable from the rest of the movement.
申请公布号 US4157008(A) 申请公布日期 1979.06.05
申请号 US19760748182 申请日期 1976.12.07
申请人 ETA A G EBAUCHES FABRIK 发明人 PERROT, FRIEDRICH
分类号 G04B18/02;(IPC1-7):G04B17/00 主分类号 G04B18/02
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