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发明名称
Method of and apparatus for generating hollow faced worms and the like
摘要
申请公布号
GB404481(A)
申请公布日期
1934.01.18
申请号
GB19330005689
申请日期
1933.02.24
申请人
WILLIAM EDWIN SYKES
发明人
分类号
B23F5/20;B23F13/06
主分类号
B23F5/20
代理机构
代理人
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