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发明名称
Improvements in apparatus for the production of helically grooved hoses or tubes
摘要
申请公布号
GB605340(A)
申请公布日期
1948.07.21
申请号
GB19450026288
申请日期
1945.10.09
申请人
KOPEX-MASCHINEN A.G.
发明人
分类号
B21C37/12
主分类号
B21C37/12
代理机构
代理人
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