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经营范围
发明名称
DATA TRANSFER SYSTEM AND METHOD
摘要
申请公布号
US3533071(A)
申请公布日期
1970.10.06
申请号
USD3533071
申请日期
1967.04.12
申请人
BELL TELEPHONE LAB. INC.
发明人
BARRY M. EPSTEIN
分类号
G06K1/14;G11B15/00;G11B20/12;(IPC1-7):G11B5/02;G11B19/00;G11B27/00
主分类号
G06K1/14
代理机构
代理人
主权项
地址
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