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经营范围
发明名称
Valve grinder
摘要
申请公布号
US1908946(A)
申请公布日期
1933.05.16
申请号
US19280273319
申请日期
1928.04.27
申请人
WILLIAM BARBER
发明人
BARBER WILLIAM
分类号
B24B15/04
主分类号
B24B15/04
代理机构
代理人
主权项
地址
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