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Communication method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus Grant 6,920,138 - Tsuchiya , et al. July 19, 2 | 2005-07-19 |
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Communicating method between IPv4 terminal and IPv6 terminal and IPv4-IPv6 converting apparatus App 20020021705 - Tsuchiya, Kazuaki ;   et al. | 2002-02-21 |
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