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工人发明获专利航天总公司四院４０１所工人王志安发明的“电风扇节能保护器”获得国家专利局授予的专利证书。“电风扇节能保护器”自身功耗小，减少无功电流，可节电３０％左右。近些年来，电工出身的王志安刻苦学习，潜心钻研电学知识，发明成果接连不断。自１９９０年...
The worker invented the “Space Fan Protector” invented by 401 workers at the fourth hospital of Patents Aerospace Corporation to obtain the patent certificate granted by the State Patent Bureau. “Fan energy-saving protector” own small power consumption, reduce reactive current, can save about 30%. In recent years, Wang Zhian, an electrician, earnestly studied and devoted himself to studying electrical knowledge and inventing the fruits one after another. Since 1990 ...