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经营范围
发明名称
Pneumatic percussion tool
摘要
申请公布号
US2178246(A)
申请公布日期
1939.10.31
申请号
US19370177689
申请日期
1937.12.02
申请人
TOWLE CHARLES L
发明人
TOWLE CHARLES L.
分类号
E01B27/14;E21B1/34
主分类号
E01B27/14
代理机构
代理人
主权项
地址
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