loadpatents
Patent applications and USPTO patent grants for Zhang; Tieyan.The latest application filed is for "drill bit".
Patent | Date |
---|---|
Drill bit Grant 10,315,336 - Zhou , et al. | 2019-06-11 |
Drill Bit App 20170157799 - Zhou; Long ;   et al. | 2017-06-08 |
Automatic three-phase unbalanced load compensation experimental device and its control method Grant 8,965,747 - Zhang , et al. February 24, 2 | 2015-02-24 |
Automatic Three-phase Unbalanced Load Compensation Experimental Device And Its Control Method App 20130054204 - Zhang; Huaguang ;   et al. | 2013-02-28 |
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