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发明名称
PERCUSSIVE TOOLS AND MACHINES
摘要
申请公布号
US3456741(A)
申请公布日期
1969.07.22
申请号
USD3456741
申请日期
1967.07.05
申请人
SONOMOTIVE ENG. LTD.
发明人
DAVID RICHARD JAMES
分类号
B25D9/12;E21B1/28;(IPC1-7):E21B1/00;B25D9/00;E21C3/00
主分类号
B25D9/12
代理机构
代理人
主权项
地址
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