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发明名称
SEAMLESS ELBOW, MANUFACTURE AND DEVICE THEREOF
摘要
申请公布号
JPH06229495(A)
申请公布日期
1994.08.16
申请号
JP19930049818
申请日期
1993.02.01
申请人
SAN FLEX KK
发明人
KUROKAWA TAKASHI
分类号
B21C37/28;B21D22/26;F16L43/00;(IPC1-7):F16L43/00
主分类号
B21C37/28
代理机构
代理人
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