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发明名称
Excavating apparatus
摘要
申请公布号
US2906501(A)
申请公布日期
1959.09.29
申请号
US19570685871
申请日期
1957.09.24
申请人
BRELL JULES J
发明人
BRELL JULES J.
分类号
E02F3/10;E02F5/02;E02F9/08;E21B7/00
主分类号
E02F3/10
代理机构
代理人
主权项
地址
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