20 Utility Patents
#2,306 in Beijing
#5,682 in China
#168,887 in the World
Forward Citations = 11
Company Filing History:

Institute of Geology and Geophysics, Cas
Institute of Geology and Geophysics
4. 1 out of 1
Yunnan Dianzhong Water Diversion Engineering Co.
where one patent can have more than one assignee
Get your Inventor Badge Today