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发明名称
METHOD AND APPARATUS FOR ROLL-EXTRUDING LARGE DIAMETER THIN-WALLED TUBING
摘要
申请公布号
US3517535(A)
申请公布日期
1970.06.30
申请号
USD3517535
申请日期
1968.07.09
申请人
PARSONS CORP.
发明人
CLAUS L. SPORCK
分类号
B21D22/16;(IPC1-7):B21B19/16
主分类号
B21D22/16
代理机构
代理人
主权项
地址
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