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Subsynchronous oscillation relay
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Patent number 9,806,690
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Issue date Oct 31, 2017
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AEP Transmission Holding Company, LLC
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Yanfeng Gong
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H03 - BASIC ELECTRONIC CIRCUITRY
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Power transmission tower
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Patent number D688624
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Issue date Aug 27, 2013
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AEP Transmission Holding Company, LLC
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Meihuan Zhu Fulk
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D13 - Equipment for production, distribution, or transformation of energy
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Power transmission line
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Patent number D688625
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Issue date Aug 27, 2013
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AEP Transmission Holding Company, LLC
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Meihuan Zhu Fulk
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D13 - Equipment for production, distribution, or transformation of energy