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JPH076542A
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Optical rotary card adapter
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JPH06186906A
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Celestial globe
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JPH01116966A
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Method and device for recording and reproducing encipherment digital information
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JPH01106366A
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System and device for recording and reproducing digital information by enciphering and decoding
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JPS63316347A
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Sound correcting cai recording and reproducing system and its device
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JPS63184164A
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Ic card system
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JPS6339071A
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Bus control system and constitution of processing circuit
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JPS6331795A
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Ic card system
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JPS6142738A
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Optical recording and reproducing system
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JPS60253059A
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Recording and reproducing disk and its device
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JPS60251568A
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Synchronous recording and reproduction of disk
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JPS60242533A
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Method, medium, and device for optical recording and magnetic recording
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JPS60236164A
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System for recording superposed information on disk and its recording medium and device
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JPS60226047A
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Recording and reproducing disk and device
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JPS6095745A
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Disc and apparatus of plural recording faces
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JPS6085451A
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Optical disc and photomagnetic disc with shadow track
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JPS6079544A
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Recording by large capacity disk
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JPS6076055A
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Method and device for recording and reproduction of multiple information
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