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发明名称
Cleaning device for conduits
摘要
申请公布号
US2454884(A)
申请公布日期
1948.11.30
申请号
US19450589221
申请日期
1945.04.19
申请人
PEADEN WILLIAM H
发明人
PEADEN WILLIAM H.
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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