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Patent applications and USPTO patent grants for Spearing; A. J. S. (Sam).The latest application filed is for "system and method for monitoring bearing compression rate of filler in coal mine gob area".
Patent | Date |
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System and method for monitoring bearing compression rate of filler in coal mine gob area Grant 11,414,991 - Zhang , et al. August 16, 2 | 2022-08-16 |
System And Method For Monitoring Bearing Compression Rate Of Filler In Coal Mine Gob Area App 20210277779 - ZHANG; Jixiong ;   et al. | 2021-09-09 |
Multilevel Deep Well Cooling And Geothermal Utilization System And Process App 20210172319 - ZHANG; Jixiong ;   et al. | 2021-06-10 |
Method For Determining Internal Stress Of Solid-cut-and-fill Material App 20200241169 - Li; Meng ;   et al. | 2020-07-30 |
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