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Intelligent telephone
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Patent number 4,503,288
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Issue date Mar 5, 1985
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Novation, Inc.
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Bayard F. Kessler
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Flexible acoustic coupler
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Patent number 4,446,333
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Issue date May 1, 1984
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Novation, Inc.
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Bayard F. Kessler
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Electronics package
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Patent number 4,297,530
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Issue date Oct 27, 1981
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Novation, Inc.
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Bayard F. Kessler
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H04 - ELECTRIC COMMUNICATION TECHNIQUE