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经营范围
发明名称
Watch crystal
摘要
申请公布号
US2595172(A)
申请公布日期
1952.04.29
申请号
US19460687863
申请日期
1946.08.02
申请人
SCHENKE KURTISS P
发明人
SCHENKE KURTISS P.
分类号
G04D3/06
主分类号
G04D3/06
代理机构
代理人
主权项
地址
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