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发明名称
Time switch
摘要
申请公布号
US1942074(A)
申请公布日期
1934.01.02
申请号
US19290399835
申请日期
1929.10.15
申请人
GENERAL ELECTRIC COMPANY
发明人
TOWNSEND GEORGE R.
分类号
G04C23/16
主分类号
G04C23/16
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代理人
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