INTERNATIONAL PATENT: POWERCHINA CHENGDU ENGINEERING CORPORATION LIMITED, 中国电建集团成都勘测设计研究院有限公司, INSTITUTE OF EXPLORATION TECHNOLOGY, CHINESE ACADEMY OF GEOLOGICAL SCIENCES, 中国地质科学院探矿工艺研究所 FILES APPLICATION FOR "FLEXIBLE STEERING CORING DRILL TOOL"

GENEVA, Feb. 16 -- POWERCHINA CHENGDU ENGINEERING CORPORATION LIMITED (No. 1, Huanhua North Road, Qingyang DistrictChengdu, Sichuan 610072), 中国电建集团成都勘测设计研究院有限公司 (中国四川省成都市青羊区浣花北路1号), INSTITUTE OF EXPLORATION TECHNOLOGY, CHINESE ACADEMY OF GEOLOGICAL SCIENCES (No. 1, Section 2 North of 1st Ring Road, Jinniu DistrictChengdu, Sichuan 610000), 中国地质科学院探矿工艺研究所 (中国四川省成&#...