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发明名称
Improved method of and apparatus for producing hollow metal articles of cylindrical form
摘要
申请公布号
GB438790(A)
申请公布日期
1935.11.25
申请号
GB19340012232
申请日期
1934.04.23
申请人
CARL MINTER YODER
发明人
分类号
B21C37/08
主分类号
B21C37/08
代理机构
代理人
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