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Inventor
DAN ZHAOJUN
CN
2 patents
Patents
2 patents
US10161468B2
Dec 25, 2018
Two-stage stiffness type elastomer combined device
CRRC YANGTZE CORPORATION LTD
0 citations
30
US9919718B2
Mar 20, 2018
Variable stiffness positioning device for railway vehicle bogie axle box
CRRC YANGTZE CORPORATION LTD
0 citations
30