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发明名称
METHOD FOR STEPPING CONSTRICTION WORK OF PIPE MATERIAL
摘要
申请公布号
JPS57103741(A)
申请公布日期
1982.06.28
申请号
JP19800180468
申请日期
1980.12.22
申请人
MITSUBISHI JUKOGYO KK;UMEMURA KOGYO KK
发明人
KOBAYASHI HIROSHI;UMEMURA TOMIJI
分类号
B21D41/04;B21D22/20
主分类号
B21D41/04
代理机构
代理人
主权项
地址
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