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Telephone subset arrangement
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Patent number 5,317,634
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Issue date May 31, 1994
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Alcatel N.V.
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Ronald C. S. Fox
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Protection circuit
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Patent number 5,208,718
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Issue date May 4, 1993
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Alcatel N.V.
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Ronald C. S. Fox
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Dialler chip mode signal
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Patent number 5,157,720
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Issue date Oct 20, 1992
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Alcatel N.V.
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Ronald C. S. Fox
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Battery boosted dial memory
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Patent number 5,113,434
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Issue date May 12, 1992
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Alcatel N.V.
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Ronald C. S. Fox
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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