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经营范围
发明名称
Improvements in and relating to tubes formed by helical winding
摘要
申请公布号
GB743170(A)
申请公布日期
1956.01.11
申请号
GB19540035552
申请日期
1951.02.09
申请人
ERNEST BRADBURY ROBINSON
发明人
分类号
B31C3/00
主分类号
B31C3/00
代理机构
代理人
主权项
地址
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