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发明名称
PIPE FOR DUCTILITYYCRACKKPROOF AND FRAGILITYYCRACKKPROOF
摘要
申请公布号
JPS53124321(A)
申请公布日期
1978.10.30
申请号
JP19770038800
申请日期
1977.04.05
申请人
NIPPON STEEL CORP
发明人
NAKANISHI SHIYOUICHI;MIMURA HIROSHI
分类号
F16L9/02
主分类号
F16L9/02
代理机构
代理人
主权项
地址
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