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发明名称
DOWN HAMMER
摘要
申请公布号
JPH08246778(A)
申请公布日期
1996.09.24
申请号
JP19950047422
申请日期
1995.03.07
申请人
KENCHO KOBE:KK
发明人
SHIMADA CHIKASHI
分类号
E21B4/14;E21B4/16;(IPC1-7):E21B4/16
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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