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发明名称
TELEPHONE ANSWERING AND RECORDING DEVICES
摘要
申请公布号
CA595862(A)
申请公布日期
1960.04.12
申请号
CAD595862
申请日期
申请人
HARRY W. CAIN
发明人
HARRY W. CAIN
分类号
主分类号
代理机构
代理人
主权项
地址
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