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发明名称
Valve grinder
摘要
申请公布号
US1877348(A)
申请公布日期
1932.09.13
申请号
US19310573816
申请日期
1931.11.09
申请人
DURO METAL PRODUCTS COMPANY
发明人
MCNAUGHT NORRIS F.;PETERSON EDWARD H.
分类号
B24B15/08
主分类号
B24B15/08
代理机构
代理人
主权项
地址
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