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经营范围
发明名称
Pitting cleaner
摘要
申请公布号
US2156744(A)
申请公布日期
1939.05.02
申请号
US19380244260
申请日期
1938.12.06
申请人
SMITH HENRY J
发明人
SMITH HENRY J.
分类号
B24D9/04
主分类号
B24D9/04
代理机构
代理人
主权项
地址
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