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发明名称
Pipe cleaning device
摘要
申请公布号
US2117659(A)
申请公布日期
1938.05.17
申请号
US19360064108
申请日期
1936.02.15
申请人
NATIONAL CABLE, INC.
发明人
GOBATTI EDMOND F.
分类号
E03C1/302
主分类号
E03C1/302
代理机构
代理人
主权项
地址
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