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经营范围
发明名称
Collet chuck
摘要
申请公布号
US1981660(A)
申请公布日期
1934.11.20
申请号
US19330660827
申请日期
1933.03.15
申请人
OLSON CHARLES W
发明人
OLSON CHARLES W.
分类号
B23B31/20
主分类号
B23B31/20
代理机构
代理人
主权项
地址
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