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发明名称
Twenty cycle generator
摘要
申请公布号
US2751546(A)
申请公布日期
1956.06.19
申请号
US19520287973
申请日期
1952.05.15
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
DIMMER ROBERT P.
分类号
H04M19/02
主分类号
H04M19/02
代理机构
代理人
主权项
地址
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