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Digital servo valve system
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Patent number 5,036,886
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Issue date Aug 6, 1991
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Olson Controls, Inc.
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Zenny Olsen
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G05 - CONTROLLING REGULATING
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Digital servo valve system
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Patent number 4,951,549
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Issue date Aug 28, 1990
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Olsen Controls, Inc.
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Zenny Olsen
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G05 - CONTROLLING REGULATING
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Electronic damping circuit
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Patent number 4,945,294
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Issue date Jul 31, 1990
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Array Technologies, Inc.
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Edward Anderson
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G05 - CONTROLLING REGULATING