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发明名称
Electric timer
摘要
申请公布号
US2529371(A)
申请公布日期
1950.11.07
申请号
US19500150287
申请日期
1950.03.17
申请人
BENJAMIN LEONARD P
发明人
BENJAMIN LEONARD P.
分类号
G04C23/20
主分类号
G04C23/20
代理机构
代理人
主权项
地址
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