4. Dynamic magnetic information storage or retrieval
  5. Record medium

Jeffrey F. Liu

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Data access device implemented with open and closed control...

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Reexamination Certificate

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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
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Magnetic data card servo writer

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
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Magnetic data card servo writer

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate

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Magnetic data storage card

Dynamic magnetic information storage or retrieval – Record medium
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Profile ID: LFUS-PAI-P-2133693

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