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经营范围
发明名称
Method and apparatus for speed variation compensation in a recording system
摘要
申请公布号
US2957167(A)
申请公布日期
1960.10.18
申请号
US19580707699
申请日期
1958.01.08
申请人
TEXACO INC.
发明人
PARRACK ALVIN L.
分类号
G11B23/00
主分类号
G11B23/00
代理机构
代理人
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地址
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