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Data accumulation system

Dynamic magnetic information storage or retrieval – Record copying
Patent

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Data copying method for disk storage medium

Dynamic magnetic information storage or retrieval – Record copying
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Data storage device

Dynamic magnetic information storage or retrieval – Record copying
Reexamination Certificate

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Device and method for contact patterning of dual-sided...

Dynamic magnetic information storage or retrieval – Record copying – Contact transfer
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Device for recording and playing back information signals

Dynamic magnetic information storage or retrieval – Record copying
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Device for recording signal so as to facilitate effective...

Dynamic magnetic information storage or retrieval – Record copying
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Device for reproducing the recorded content of a magnetic card

Dynamic magnetic information storage or retrieval – Record copying – Contact transfer
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Device for switching between multiple recording media based on a

Dynamic magnetic information storage or retrieval – Record copying
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Digital data duplicating system

Dynamic magnetic information storage or retrieval – Record copying
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Digital displacement transducer and method for measurement

Dynamic magnetic information storage or retrieval – Record copying – Contact transfer
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Digital recording and reproducing apparatus for high-speed copyi

Dynamic magnetic information storage or retrieval – Record copying
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Disk biasing for manufacture of servo patterned media

Dynamic magnetic information storage or retrieval – Record copying
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Disk drive device having a single motor for rotating a plurality

Dynamic magnetic information storage or retrieval – Record copying
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Divided master tape production device, dubbing device and dubbin

Dynamic magnetic information storage or retrieval – Record copying
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Dubbing system

Dynamic magnetic information storage or retrieval – Record copying
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Duplicating system for video and audio signals using timebase co

Dynamic magnetic information storage or retrieval – Record copying
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Duplicator

Dynamic magnetic information storage or retrieval – Record copying
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Duplicator system manageable of life of mother tape

Dynamic magnetic information storage or retrieval – Record copying
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