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JPS5842303A
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Radar reflector with variable reflection factor
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JPS5887927A
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Simplex bidirectional communication system
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JPS5742201A
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Electromagnetic wave reflector
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JPS5742871A
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Radio-wave reflection system
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JPS5635524A
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Quartz oscillator
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JPS55130216A
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Crystal oscillator
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JPS5642420A
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Piezoelectric vibrator
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JPS5612105A
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Mechanical-reflectivity-variable radar reflector
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JPS5612106A
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Electric-reflectivity-variable radar reflector
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JPS54149596A
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Reflectivity variable radar reflector
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JPS52134390A
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Quartz vibrator
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JPS5224486A
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Quartz vibrator
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JPS5224485A
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Quartz vibrator
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