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发明名称
Lightweight portable diamond drill
摘要
申请公布号
US2914305(A)
申请公布日期
1959.11.24
申请号
US19560612612
申请日期
1956.09.28
申请人
BUCYRUS-ERIE COMPANY
发明人
WINK FREDRICK W.
分类号
B28D1/04;E21B7/02
主分类号
B28D1/04
代理机构
代理人
主权项
地址
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