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发明名称
Hammer pistons for percussion machine and tools
摘要
申请公布号
US2820433(A)
申请公布日期
1958.01.21
申请号
US19520296681
申请日期
1952.07.01
申请人
ATLAS COPCO AKTIEBOLAG
发明人
PYK HERMAN THEODOR
分类号
B25D17/06
主分类号
B25D17/06
代理机构
代理人
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