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Date of Employment:2003-11-19

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一种液压冲击膨胀式地下管道非开挖更换系统设计

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Affilication of Author(s):机械工程学院
Patent Applicant:huorui
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

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