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经营范围
发明名称
Percussion tool incorporating a combustion cylinder for driving a reciprocable hammer piston
摘要
申请公布号
US3336986(A)
申请公布日期
1967.08.22
申请号
US19650434914
申请日期
1965.02.24
申请人
ATLAS COPCO AKTIEBOLAG
发明人
NYHOLM BENGT VIKTOR
分类号
E21B1/34;E21B6/06;E21B6/08
主分类号
E21B1/34
代理机构
代理人
主权项
地址
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