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发明名称
Tool head retainer
摘要
申请公布号
US1889400(A)
申请公布日期
1932.11.29
申请号
US19280326076
申请日期
1928.12.14
申请人
ALBERT DORFMAN
发明人
DORFMAN ALBERT
分类号
B25G3/32
主分类号
B25G3/32
代理机构
代理人
主权项
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