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发明名称
Excavation implement
摘要
申请公布号
US2843362(A)
申请公布日期
1958.07.15
申请号
US19540451156
申请日期
1954.08.20
申请人
WILHELM DEGEN
发明人
DEGEN WILHELM
分类号
E02F5/20;E21B7/26
主分类号
E02F5/20
代理机构
代理人
主权项
地址
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