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发明名称
Apparatus for cleaning tubes
摘要
申请公布号
US2299523(A)
申请公布日期
1942.10.20
申请号
US19390269246
申请日期
1939.04.21
申请人
CARPMAIL ARTHUR B
发明人
CARPMAIL ARTHUR B.
分类号
B08B9/02;B08B9/023
主分类号
B08B9/02
代理机构
代理人
主权项
地址
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