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发明名称
Heating system for rail switches
摘要
申请公布号
US2114726(A)
申请公布日期
1938.04.19
申请号
US19360080999
申请日期
1936.05.21
申请人
THOMPSON JR FREDERICK H
发明人
JR. FREDERICK H. THOMPSON,
分类号
F23D3/00
主分类号
F23D3/00
代理机构
代理人
主权项
地址
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