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发明名称
Rock drill
摘要
申请公布号
US3060894(A)
申请公布日期
1962.10.30
申请号
US19600011900
申请日期
1960.02.29
申请人
INGERSOLL-RAND COMPANY
发明人
JR. ROBERT C. DEAN,;AUKSMANN BORIS
分类号
B25D9/08;B25D9/14;B25D9/20;B25D17/24;E21B1/30
主分类号
B25D9/08
代理机构
代理人
主权项
地址
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