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发明名称
MULTI-PURPOSE CIVIL WORKING MECHANISM
摘要
申请公布号
JPH01295991(A)
申请公布日期
1989.11.29
申请号
JP19880126765
申请日期
1988.05.24
申请人
SATO HIROSHI
发明人
SATO HIROSHI
分类号
E02F3/28;E21B11/00
主分类号
E02F3/28
代理机构
代理人
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