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经营范围
发明名称
Punch retainer mechanism
摘要
申请公布号
US1910296(A)
申请公布日期
1933.05.23
申请号
US19290339145
申请日期
1929.02.11
申请人
GUARDIAN TRUST COMPANY
发明人
KING FLOYD C.
分类号
B21D28/34
主分类号
B21D28/34
代理机构
代理人
主权项
地址
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