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发明名称
Antifreeze device for water systems
摘要
申请公布号
US1820473(A)
申请公布日期
1931.08.25
申请号
US19300435559
申请日期
1930.03.13
申请人
EARLE ANTI-FREEZE VALVE CORPORATION
发明人
MILONE SAMUEL
分类号
F01P11/20
主分类号
F01P11/20
代理机构
代理人
主权项
地址
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