Door intercom
CHEN YUANZHI, YU YUNZHU, ZHU SHENGQIANG, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, NING HUACAI, ZHAO JIHUI, ZENG GUOCONG, WEI GUIXING, CHEN JINRONG
Year of Publication 19.09.2017
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Year of Publication 19.09.2017
Patent
Two -wire system video intercom system
CHEN YUANZHI, YU YUNZHU, ZHU SHENGQIANG, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, NING HUACAI, ZHAO JIHUI, ZENG GUOCONG, WEI GUIXING, CHEN JINRONG
Year of Publication 19.09.2017
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Year of Publication 19.09.2017
Patent
Outdoor intercom
CHEN YUANZHI, YU YUNZHU, ZHU SHENGQIANG, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, NING HUACAI, ZHAO JIHUI, ZENG GUOCONG, WEI GUIXING, CHEN JINRONG
Year of Publication 15.09.2017
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Year of Publication 15.09.2017
Patent
Indoor intercom
CHEN YUANZHI, YU YUNZHU, ZHU SHENGQIANG, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, NING HUACAI, ZHAO JIHUI, ZENG GUOCONG, WEI GUIXING, CHEN JINRONG
Year of Publication 12.09.2017
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Year of Publication 12.09.2017
Patent
Building intercom system based on TCP/IP
CHEN YUANZHI, YU YUNZHU, WEN MINGRONG, JIANG SHUAI, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, ZHANG TAIWEN, NING HUACAI, ZHOU TAN, ZHAO JIHUI, JIANG JIAYAN
Year of Publication 13.07.2016
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Year of Publication 13.07.2016
Patent
Inside call transfer system of entrance guard
CHEN YUANZHI, YU YUNZHU, WEN MINGRONG, JIANG SHUAI, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, ZHANG TAIWEN, NING HUACAI, ZHOU TAN, ZHAO JIHUI, JIANG JIAYAN
Year of Publication 29.06.2016
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Year of Publication 29.06.2016
Patent
Entrance guard's interior video intercom system
CHEN YUANZHI, YU YUNZHU, WEN MINGRONG, JIANG SHUAI, YANG SHUANGQUAN, WANG XIAOQING, LUO ZENGPING, ZHANG TAIWEN, NING HUACAI, ZHOU TAN, ZHAO JIHUI, JIANG JIAYAN
Year of Publication 27.04.2016
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Year of Publication 27.04.2016
Patent