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发明名称
Dust protector cap for percussive hammers
摘要
申请公布号
US2944523(A)
申请公布日期
1960.07.12
申请号
US19580725839
申请日期
1958.04.02
申请人
WERSTEIN FRANK A
发明人
WERSTEIN FRANK A.
分类号
B25D17/00
主分类号
B25D17/00
代理机构
代理人
主权项
地址
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