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Method of recording-reproduction on mobile magnetic medium
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Defice for magnetic record-reproduction
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Device for playback of magnetic recording
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Device for reproducing magnetic record
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Device for reproducing magnetic record
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Process for reproducing information from magnetic medium
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Method of measuring resistance
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Device for balanced conversion of physical values and measuring thereof
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Stabilized power supply source
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Follow-up system
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Active scale changer
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Apparatus for balancing conversion of physical values and their measurement
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Method of correcting error of balancing conversion of physical quantities
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High-voltage measuring bridge
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