Winch loose rope protector
WANG XINCHUN, JIANG LIN, SUI CHUN, SUN YONGTAO, FANG QINGSONG, LIU SIFA
Year of Publication 30.10.2013
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Year of Publication 30.10.2013
Patent
Efficient sand screening machine
WANG XINCHUN, WANG ZHIYONG, SUI CHUN, SUN YONGTAO, FANG QINGSONG, LIU SIFA, YANG ZHIMING
Year of Publication 28.08.2013
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Year of Publication 28.08.2013
Patent
Plugging device for mine drilling hole water leakage
WANG XINCHUN, WANG ZHIYONG, SUI CHUN, SUN YONGTAO, FANG QINGSONG, LIU SIFA, YANG ZHIMING
Year of Publication 28.08.2013
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Year of Publication 28.08.2013
Patent