折叠式钻机底座协调升降控制系统

Release time:2018-05-15|Hits:

Patent Applicant:Wang Hanpeng

Disigner of the Invention:lishucai

Type of Patent:发明

Application Number:201210507683.0

Number of Inventors:6

Service Invention or Not:no

Application Date:2012-11-30

Publication Date:2015-07-22

Authorization Date:2012-11-30