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Call handoff
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Patent number 6,430,412
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Issue date Aug 6, 2002
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GTE Airfone Incorporated
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William E. Hogg
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Call handoff
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Patent number 6,104,926
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Issue date Aug 15, 2000
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GTE Airfone, Incorporated
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William E. Hogg
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Cord reel assembly
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Patent number 5,535,960
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Issue date Jul 16, 1996
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GTE Airfone Incorporated
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Richard E. Skowronski
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H04 - ELECTRIC COMMUNICATION TECHNIQUE