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经营范围
发明名称
ELBOW FORMING METHODS AND MACHINES
摘要
申请公布号
US3490137(A)
申请公布日期
1970.01.20
申请号
USD3490137
申请日期
1967.09.11
申请人
GENERAL METALCRAFT INC.
发明人
GEORGE J. BUCK;LOUIS E. MARANTETTE
分类号
B21C37/28;(IPC1-7):B21D39/04
主分类号
B21C37/28
代理机构
代理人
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地址
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