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经营范围
发明名称
WING BIT
摘要
申请公布号
JPS57146888(A)
申请公布日期
1982.09.10
申请号
JP19810030258
申请日期
1981.03.03
申请人
TONE BORING:KK
发明人
SATOU TOSHIHIKO
分类号
E21B10/00;E21B10/16
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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