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US”. Patent Oct. 13, 1981 Sheet 2 of5 4,294,404 Fig. 3. I V A / i ' V /,l /32 3/\ r32,51,52 ,31, 32/51 ,32 M’ WA‘ V/A' VA‘ L VA l m m | Family Room 1 Living Room VA I I when j Guest Bedroom // // A V I7 /////,i Bedroom#3 / V l Bedr0om#4 F4 [7/1 3/\ 32\ / 0 ' K] V 1 V 1 Dining Room ] Bathroom 5I\ \ 2 4 a e lo 12 'iia'ié'ié '2'o'2'2'2'4 Typical Winter Weekday Usage for a Family of Four Master Bedroom
