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发明名称
Percussion tools
摘要
申请公布号
US2773481(A)
申请公布日期
1956.12.11
申请号
US19540404115
申请日期
1954.01.14
申请人
MECHANICAL RESEARCH CORPORATION
发明人
BLAKE ARCHIE
分类号
B25D9/26;E21C37/24
主分类号
B25D9/26
代理机构
代理人
主权项
地址
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