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经营范围
发明名称
Cutting compound
摘要
申请公布号
US2162297(A)
申请公布日期
1939.06.13
申请号
US19370132298
申请日期
1937.03.22
申请人
DAHLBERG ALFRED E
发明人
DAHLBERG ALFRED E.
分类号
主分类号
代理机构
代理人
主权项
地址
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