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发明名称
Method and means for maintaining hot water temperatures in supply pipes
摘要
申请公布号
US2760047(A)
申请公布日期
1956.08.21
申请号
US19550486546
申请日期
1955.02.07
申请人
HANSON ALDEN W
发明人
HANSON ALDEN W.
分类号
F24D17/00
主分类号
F24D17/00
代理机构
代理人
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