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Ceramic bandstop filter
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Patent number RE32768
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Issue date Oct 18, 1988
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Motorola, Inc.
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Robert F. D'Avello
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333 - Wave transmission lines and networks
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Ceramic bandpass filter
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Patent number 4,431,977
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Issue date Feb 14, 1984
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Motorola, Inc.
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Raymond L. Sokola
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H01 - BASIC ELECTRIC ELEMENTS
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Ceramic bandstop filter
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Patent number 4,426,631
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Issue date Jan 17, 1984
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Motorola, Inc.
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Robert F. D'Avello
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H01 - BASIC ELECTRIC ELEMENTS