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Ripple rejection filter
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Patent number 4,872,127
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Issue date Oct 3, 1989
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MagneTek, Inc.
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Dennis C. Nolan
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G06 - COMPUTING CALCULATING COUNTING
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Digital phase synchronizer
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Patent number 4,754,407
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Issue date Jun 28, 1988
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MagneTek, Inc.
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Dennis C. Nolan
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H03 - BASIC ELECTRONIC CIRCUITRY
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DC motor adaptive controller
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Patent number 4,716,348
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Issue date Dec 29, 1987
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MagneTek, Inc.
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Dennis C. Nolan
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER