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Year of Publication 19.12.2023
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Year of Publication 19.12.2023
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Device and method for detecting acid absorption rate of lead-acid battery adhesive
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Year of Publication 22.09.2023
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Year of Publication 22.09.2023
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Modular fracturing fluid burns device
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Year of Publication 09.12.2015
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Multi -purpose lance that drags for of down -hole junk
Han Tongfang, Tao Tao, Wang Dongdong, Zhang Jindong, Li Xuemei, Li Dongchun, Chen Minwang, Liu Liguo, Wang Wenhui
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Year of Publication 24.08.2016
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Down -hole junk slip socket
Han Tongfang, Liu Jifeng, Tao Tao, Zhang Baowei, Si Jianbin, Li Xuemei, Li Dongchun, Chen Minwang, Wang Jinbo
Year of Publication 24.08.2016
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Year of Publication 24.08.2016
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Lead to well equipment air -operated controller lubricating arrangement
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Year of Publication 16.03.2016
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Year of Publication 16.03.2016
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Water bath type fire-proof purifier for muffler of engine
HAN TONGFANG, CHEN MINWANG, CHEN JIANQING, ZHOU XIANGJUN, GUO XUEFEI, LI DONGCHUN, CHENG KAI, LIU ZHONGXIN, LIU MINGHUI
Year of Publication 26.01.2011
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Year of Publication 26.01.2011
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Air filtering system of pneumatic control device
HAN TONGFANG, CHEN MINWANG, LIU LIGUO, LI DONGCHUN, CHENG KAI, LI XUEMEI, LIU MINGHUI, LIU ZHONGXIN, ZHANG HUIYONG, LI XUNGANG
Year of Publication 26.01.2011
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Year of Publication 26.01.2011
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