Assignee
CHANGCHUN RAILWAY VEHICLES CO
CN·2 granted patents·1 pending application·1 citations·filing 2013–2013
Top patents by PatentIndex Score
3 records- 0154US9302355B2Method of processing gear reduction boxCHANGCHUN RAILWAY VEHICLES CO·Filed 2013·Granted Apr 5, 2016·1 cites·4 claims
- 0240US9260119B2Full butt joint structure of connection joint between side frame and cross beam of bogie frame and assembly welding processCHANGCHUN RAILWAY VEHICLES CO·Filed 2013·Granted Feb 16, 2016·0 cites·5 claims
- 0333US2013259587A1Processing method for variable depth, deep-hole drilling, chip breaking and removalCHANGCHUN RAILWAY VEHICLES CO·Filed 2013·Application pending·0 cites
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