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经营范围
发明名称
Balance wheel
摘要
申请公布号
US2411444(A)
申请公布日期
1946.11.19
申请号
US19430494159D
申请日期
1943.07.10
申请人
MARCEL MAISTRE
发明人
MAISTRE MARCEL
分类号
G04B18/00
主分类号
G04B18/00
代理机构
代理人
主权项
地址
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