INTERNATIONAL PATENT: BEIJING TIANMA INTELLIGENT CONTROL TECHNOLOGY CO., LTD., 北京天玛智控科技股份有限公司, BEIJING CCRI-TIANMA AUTOMATION TECHNOLOGY CO., LTD., 北京煤科天玛自动化科技有限公司 FILES APPLICATION FOR "METHOD AND APPARATUS FOR ACQUIRING ADVANCING DISTANCE OF WORKING FACE AND ELECTRONIC DEVICE AND STORAGE MEDIUM"

GENEVA, April 28 -- BEIJING TIANMA INTELLIGENT CONTROL TECHNOLOGY CO., LTD. (No. 27 South Linhe StreetShunyi District, Beijing 101399), 北京天玛智控科技股份有限公司 (中国北京市顺义区林河南大街27号), BEIJING CCRI-TIANMA AUTOMATION TECHNOLOGY CO., LTD. (No. 27 South Linhe StreetShunyi District, Beijing 101300), 北京煤科天玛自动化科技有限公司 (中国北京市顺义区林河南大街27号) filed a patent application (PCT/C...