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Patent Application Publication Nov. 20, 2003 Sheet 1 0f 3 Fig. 1 Fig. 2 22. 1% w 2 Cold er US 2003/0213850 A1 water 1- Hot z- Cold Wat“ water ~ 8- Temporary buffer Electric valv- Mixing chamber 15 I 6- Instant heater 1- Hot Electric valve - 4 Electric valve - 4 mg 3' Mixing chamber Fig. 3c Electric valve - 4 3— Mixing chamber chamber
