Improvements in or relating to segment for forming tubular structures,申请号GB19390021464-传众专利搜索

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发明名称	Improvements in or relating to segment for forming tubular structures
摘要
申请公布号	GB531490(A)	申请公布日期	1941.01.06
申请号	GB19390021464	申请日期	1939.07.24
申请人	THE COMMERCIAL SHEARING & STAMPING COMPANY	发明人
分类号	E21D11/15	主分类号	E21D11/15
代理机构		代理人
主权项
地址

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