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发明名称
摘要
申请公布号
FR2231160(B1)
申请公布日期
1977.10.21
申请号
FR19740013899
申请日期
1974.04.22
申请人
SINGER CY
发明人
分类号
H03M1/52;G01D5/244;G01D5/245;H03M1/00
主分类号
H03M1/52
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