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发明名称
STRESS RELIEF-DEVICE FOR FREE ACCESS FLOOR
摘要
申请公布号
JPH04313422(A)
申请公布日期
1992.11.05
申请号
JP19910104626
申请日期
1991.04.10
申请人
HITACHI METALS LTD
发明人
KOIKE EIJI
分类号
B21D1/06;E04F15/024
主分类号
B21D1/06
代理机构
代理人
主权项
地址
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