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发明名称
Valve grinding disc for grinding engine valves and valve seatings
摘要
申请公布号
GB446271(A)
申请公布日期
1936.04.23
申请号
GB19340030329
申请日期
1934.10.23
申请人
WALTER GAINES
发明人
分类号
B24B15/00
主分类号
B24B15/00
代理机构
代理人
主权项
地址
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