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Patent applications and USPTO patent grants for Cai; Changqing.The latest application filed is for "a high accuracy measuring device for measuring large mass".
Patent | Date |
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High accuracy measuring device for measuring large mass Grant 10,378,950 - Wang , et al. A | 2019-08-13 |
Measuring device for measuring large mass with optical refraction and displacement measuring Grant 10,274,362 - Wang , et al. | 2019-04-30 |
A High Accuracy Measuring Device for Measuring Large Mass App 20190086255 - WANG; Jian ;   et al. | 2019-03-21 |
A Measuring Device for Measuring Large Mass with Optical Refraction and Displacement Measuring App 20180335337 - WANG; Jian ;   et al. | 2018-11-22 |
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