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发明名称
Device for releasing water to prevent freezing
摘要
申请公布号
US3397711(A)
申请公布日期
1968.08.20
申请号
US19650488567
申请日期
1965.09.20
申请人
CHARLES H. STRANGE
发明人
STRANGE CHARLES H.
分类号
F16K31/68;G05D23/12
主分类号
F16K31/68
代理机构
代理人
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地址
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