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

Release time:2021-09-01| Hits:

Patent Applicant:杨晓春,王斌,wangleixia

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