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Data card with a full circular track for alignment and...

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Reexamination Certificate

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Degausser for magnetic stripe card transducing system

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent

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Device for automatically recording, reproducing and translating,

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent

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Device for recording and reproducing audio signals on flat recta

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent

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Device for writing on a card-shaped data memory having sensors f

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent

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Document identification employing exchange-anisotropic magnetic

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent

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Dual particle population magnetic recording medium

Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent

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