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发明名称
VALVE
摘要
申请公布号
CA347226(A)
申请公布日期
1935.01.01
申请号
CAD347226
申请日期
申请人
THE SPENCER THERMOSTAT COMPANY
发明人
JOHN A. SPENCER
分类号
主分类号
代理机构
代理人
主权项
地址
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