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经营范围
发明名称
Gripping mechanism
摘要
申请公布号
US1796763(A)
申请公布日期
1931.03.17
申请号
US19290411708
申请日期
1929.12.04
申请人
NATIONAL TUBE COMPANY
发明人
PATTERSON THOMAS
分类号
B25B1/14;B25B1/18;B25B1/20;B25B5/06;B25B5/12;B25B5/14
主分类号
B25B1/14
代理机构
代理人
主权项
地址
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