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Patent applications and USPTO patent grants for Ma; Kechao.The latest application filed is for "threshing device with two-way pull wires and adjustable threshing clearance and combined harvester".
Patent | Date |
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Threshing device with two-way pull wires and adjustable threshing clearance and combined harvester Grant 11,330,764 - Ma , et al. May 17, 2 | 2022-05-17 |
Threshing Device with Two-Way Pull Wires and Adjustable Threshing Clearance and Combined Harvester App 20210329842 - MA; Zheng ;   et al. | 2021-10-28 |
Air-Jet Wind Turbine Generator App 20130280072 - Ma; Kechao | 2013-10-24 |
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