Patent applications and USPTO patent grants for Huang; Yuxing.The latest application filed is for "horizontal high speed testing device for spiral seal of horizontal cone bit bearing".
Patent | Date |
---|---|
Vertical high speed testing device for spiral seal of cone bit bearing Grant 10,429,274 - Zhou , et al. October 1, 2 | 2019-10-01 |
Horizontal high speed testing device for spiral seal of horizontal cone bit bearing Grant 10,393,615 - Zhou , et al. A | 2019-08-27 |
Vertical High Speed Testing Device For Spiral Seal Of Cone Bit Bearing App 20180348090 - Zhou; Yi ;   et al. | 2018-12-06 |
Horizontal High Speed Testing Device For Spiral Seal Of Horizontal Cone Bit Bearing App 20180348082 - Zhou; Yi ;   et al. | 2018-12-06 |
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