PATLY.AIApplication
16542738 · INTERNAL REAMER FOR ANCHOR SHAFT HOLE FOR MINING
Filed 2019-08-16 · Granted · Patent 10633927 (2020-04-28) The official file ↗The patent and its PDF ↗ · Art unit 3676 · Examiner Wei Wang Typical · CPC E21B 10/325 · HENAN POLYTECHNIC UNIVERSITY · Quality Patents Center
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