Assignee

YUE LINGHAN

CN·2 granted patents·4 citations·filing 2012–2012

Technology mixB61D2 E05F1 F16H1 Y10T1

Top patents by PatentIndex Score

2 records

0160US9061688B2Bottom door device and hopper car having the sameYUE LINGHAN·Filed 2012·Granted Jun 23, 2015·2 cites·6 claims
0260US8939088B2Bottom door opening-closing mechanism, bottom door device and drop-bottom hopper carYUE LINGHAN·Filed 2012·Granted Jan 27, 2015·2 cites·20 claims

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