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发明名称
Abrasive cleaning of pipe
摘要
申请公布号
US3052066(A)
申请公布日期
1962.09.04
申请号
US19610094934
申请日期
1961.03.10
申请人
CRUTCHER-ROLFS-CUMMINGS, INC.
发明人
FOSTER ROBERT D.
分类号
B24C3/32
主分类号
B24C3/32
代理机构
代理人
主权项
地址
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