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经营范围
发明名称
Air valve for radiators and the like
摘要
申请公布号
US1981365(A)
申请公布日期
1934.11.20
申请号
US19310528597
申请日期
1931.04.08
申请人
BRIDGEPORT BRASS COMPANY
发明人
MACDONALD WILLIAM F.
分类号
F24D19/08
主分类号
F24D19/08
代理机构
代理人
主权项
地址
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