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发明名称
Timing mechanism
摘要
申请公布号
US2073756(A)
申请公布日期
1937.03.16
申请号
US19360068135
申请日期
1936.03.10
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
OSTEN-SACKEN IRVING CHARLES
分类号
H04M3/12
主分类号
H04M3/12
代理机构
代理人
主权项
地址
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