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发明名称
HYDRAULIC OPENING OR CLOSING BUCKET
摘要
申请公布号
JPH0296086(A)
申请公布日期
1990.04.06
申请号
JP19880244443
申请日期
1988.09.30
申请人
HITACHI CONSTR MACH CO LTD
发明人
AJIRO SHUICHI;MASUDA MASAHIRO
分类号
E21B11/04;E21B11/00
主分类号
E21B11/04
代理机构
代理人
主权项
地址
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