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发明名称
Preparing and reading frequencymodulated tape records
摘要
申请公布号
US3322936(A)
申请公布日期
1967.05.30
申请号
US19620234502
申请日期
1962.10.31
申请人
SHELL OIL COMPANY
发明人
JR. HENRY WILSON JOHNSON,
分类号
G11B7/013;G11B20/14;G11B27/32
主分类号
G11B7/013
代理机构
代理人
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地址
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