Title:中国发明专利,授权,一种基于LBS的安全kNN查询方法,中华人民共和国国家产权局,专利号:ZL 2018 1 1085432.1
Patent Applicant:杨晓春,王斌,王雷霞
Type of Patent:国家发明专利
State of Patent:Authorized patents
Authorization Number:CN 109194666 B
Service Invention or Not:No
Application Date:2018-09-18
Authorization Date:2021-06-01