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经营范围
发明名称
TONE SIGNAL REPERTORY DIALER
摘要
申请公布号
US3430004(A)
申请公布日期
1969.02.25
申请号
USD3430004
申请日期
1965.12.28
申请人
DASA CORP.
发明人
EDWIN K. SHENK
分类号
H04M1/276;(IPC1-7):H04M1/50
主分类号
H04M1/276
代理机构
代理人
主权项
地址
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