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经营范围
发明名称
Heat pump ground heat exchanger - has flow taking place in one direction only through U=shaped pipes
摘要
申请公布号
DE3032104(A1)
申请公布日期
1982.04.29
申请号
DE19803032104
申请日期
1980.08.23
申请人
HOTOPP,KARLFRIED,ING.
发明人
HOTOPP,KARLFRID,ING.
分类号
F28D21/00;(IPC1-7):28D21/00
主分类号
F28D21/00
代理机构
代理人
主权项
地址
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