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Title:一种透巷道地面钻孔套管封固装置及其操作工艺
Type of Patent:发明
Application Number:201510448317.6
Number of Inventors:16
Service Invention or Not:No
Application Date:2015-07-27
Publication Date:2017-07-04
Authorization Date:2015-07-27
Release Time:2018-05-15