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发明名称
Apparatus for coating passages
摘要
申请公布号
US2305239(A)
申请公布日期
1942.12.15
申请号
US19390301077
申请日期
1939.10.24
申请人
CROM JOHN M
发明人
CROM JOHN M.
分类号
E02B5/02
主分类号
E02B5/02
代理机构
代理人
主权项
地址
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