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发明名称
VERIFICATION OF MAGNETIC RECORDING
摘要
申请公布号
US3535704(A)
申请公布日期
1970.10.20
申请号
USD3535704
申请日期
1967.11.07
申请人
BELL TELEPHONE LAB. INC.
发明人
CYRUS F. AULT
分类号
G11B15/20;G11B20/18;(IPC1-7):G11B5/02;G11B5/44
主分类号
G11B15/20
代理机构
代理人
主权项
地址
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