4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Jae-Kyu Choi

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Reel table revolution detector for use in a video cassette recor

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Tape loading apparatus with a pair of link devices having deform

Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Tape record
Patent

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Profile ID: LFUS-PAI-P-640779

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