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Stereophonic sound system
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Patent number 6,122,381
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Issue date Sep 19, 2000
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Micronas Interuetall GmbH
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Martin Winterer
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Signal modification circuit
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Patent number 5,822,437
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Issue date Oct 13, 1998
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Deutsche ITT Industries GmbH
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Martin Winterer
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Digital phase-locked loop
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Patent number 5,181,115
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Issue date Jan 19, 1993
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Deutsche ITT Industries GmbH
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Peter Flamm
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Digital decimation filter
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Patent number 4,872,129
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Issue date Oct 3, 1989
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Deutsche ITT Industries, GmbH
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Heinrich Pfeifer
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H03 - BASIC ELECTRONIC CIRCUITRY