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经营范围
发明名称
SUSPENDED STONE BREAKER
摘要
申请公布号
JPH08105288(A)
申请公布日期
1996.04.23
申请号
JP19940225339
申请日期
1994.09.20
申请人
HIRADO KINZOKU KOGYO KK
发明人
SAITO SUMITAKA
分类号
E21B7/02;B28D1/00;E21B15/00;E21B19/08;E21C37/02;(IPC1-7):E21C37/02;E21C11/00
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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