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经营范围
发明名称
Water excluding vent
摘要
申请公布号
US2480562(A)
申请公布日期
1949.08.30
申请号
US19460708097
申请日期
1946.11.06
申请人
MINOR EWING JOHN
发明人
EWING JOHN MINOR
分类号
B63J2/10
主分类号
B63J2/10
代理机构
代理人
主权项
地址
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