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发明名称
Improvements relating to the mandrels of tube-forming apparatus
摘要
申请公布号
GB355898(A)
申请公布日期
1931.09.03
申请号
GB19300021332
申请日期
1930.07.14
申请人
DEMAG AKTIENGESELLSCHAFT
发明人
分类号
B21C1/30
主分类号
B21C1/30
代理机构
代理人
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