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发明名称
Valve
摘要
申请公布号
US1972170(A)
申请公布日期
1934.09.04
申请号
US19300462663
申请日期
1930.06.20
申请人
THE SPENCER THERMOSTAT COMPANY
发明人
SPENCER JOHN A.
分类号
G05D23/10
主分类号
G05D23/10
代理机构
代理人
主权项
地址
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