Standard:Utility Model Invention Patent

Number:7588156

Issue Date:2017-10-26

Expiry Date:2027-10-25

Scope/Range:Trenchless pipe repair UV cure

Issued By:State Intellectual Property Office

Standard:Utility Model Invention Patent

Number:6707592

Issue Date:2016-12-05

Expiry Date:2026-12-04

Scope/Range:Trenchless pipe repair CCTV

Issued By:State Intellectual Property Office

Standard:INTELLECTUAL PROPERTY MANAGEMENT SYSTEM CERTIFICATION

Number:41920IP00045-04R0S

Issue Date:2020-04-29

Expiry Date:2023-04-28

Scope/Range:Production and sales of pipeline inspection and trenchless repair equipment intellectual property management involved in the R&D and sales of new energy-saving pipeline repair materials

Issued By:HUAYI certificate center

Standard:Utility Model Invention Patent

Number:4055846

Issue Date:2014-09-15

Expiry Date:2024-09-14

Scope/Range:Trenchless pipe CCTV crawler

Issued By:State Intellectual Property Office