Yukihiko Haikawa

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Apparatus for recording audio and video signals

Dynamic magnetic information storage or retrieval – Record editing
Patent

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Electronic volume control circuit for audio devices

Amplifiers – Variable impedance for signal channel controlled by separate...
Patent

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Equalizer apparatus having two dimensional display

Electrical audio signal processing systems and devices – Including frequency control – Having automatic equalizer circuit
Patent

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Error correcting and controlling system

Excavating
Patent

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Four read and write heads on a drum arranged to prevent overlapp

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent

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Profile ID: LFUS-PAI-P-107397

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