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发明名称
Pressure equalizing means for heating systems
摘要
申请公布号
US1811406(A)
申请公布日期
1931.06.23
申请号
US19270236408
申请日期
1927.11.29
申请人
RUDOLPH ALFRED J
发明人
RUDOLPH ALFRED J.
分类号
F24H9/12
主分类号
F24H9/12
代理机构
代理人
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地址
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