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发明名称
DOMESTIC HEATING SYSTEM
摘要
申请公布号
CA309495(A)
申请公布日期
1931.03.17
申请号
CAD309495
申请日期
申请人
THE CROSS COAL-O-MATIC COMPANY
发明人
WALTER MARTIN CROSS
分类号
主分类号
代理机构
代理人
主权项
地址
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