Title:一种液压冲击膨胀式地下管道非开挖更换系统设计
Institution:机械工程学院
Type of Patent:实用新型
Application Number:201821609196.4
Number of Inventors:1
Service Invention or Not:No
Application Date:2018-09-29
Publication Date:2019-09-13
Authorization Date:2019-09-13
Release Time:2019-04-15