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发明名称
Telephonography
摘要
申请公布号
GB656393(A)
申请公布日期
1951.08.22
申请号
GB19470014338
申请日期
1947.05.29
申请人
DAPHNE INVESTMENT TRUST
发明人
分类号
H04M1/652
主分类号
H04M1/652
代理机构
代理人
主权项
地址
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