GENEVA, June 20 -- COMNAV TECHNOLOGY LTD. (3rd Floor, Building 2, 618# ChengLiu Middle Rd.Jiading District, Shanghai 201801), 上海司南卫星导航技术股份有限公司 (中国上海市嘉定区澄浏中路618号2幢3楼), QINNAV TECHNOLOGY LTD. (Area B, 6th Floor, Building 1, 618# ChengLiu Middle Rd.Jiading District, Shanghai 201801), 上海钦天导航技术有限公司 (中国上海市嘉定区澄浏中路618号1幢6层B区) filed a patent ap...