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发明名称
Method of applying heads to metal drums
摘要
申请公布号
US1914867(A)
申请公布日期
1933.06.20
申请号
US19300488929
申请日期
1930.10.15
申请人
WHEELING STEEL CORPORATION
发明人
ROLLASON CHARLES H.
分类号
B21D51/32
主分类号
B21D51/32
代理机构
代理人
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地址
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