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Reminder phone
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Patent number 6,504,908
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Issue date Jan 7, 2003
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Lifeline Systems, Inc.
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Michael Bellomo
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Adaptive speakerphone system
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Patent number 5,333,171
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Issue date Jul 26, 1994
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Lifeline Systems, Inc.
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William Wang
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Adaptive speakerphone system
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Patent number 5,210,784
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Issue date May 11, 1993
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Lifeline Systems, Inc.
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William Wang
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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