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发明名称
Tool mechanism
摘要
申请公布号
US2493473(A)
申请公布日期
1950.01.03
申请号
US19480020872
申请日期
1948.04.08
申请人
DUAL MFG. AND ENGINEERING CO.
发明人
BOUCHARD LOUIS J.
分类号
主分类号
代理机构
代理人
主权项
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