E21D 5/10

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2022/0018,250 ANTI-SEISMIC SUPPORT METHOD FOR MINE SHAFTJun 24, 21Jan 20, 22Not available
2017/0016,326 FASTENER AND METHOD OF SEALING PASSAGEMar 12, 14Jan 19, 17RELBORGN PTY LTD, TRIOMVIRI PTY LTD, TRADING AS THE GROBLER PARTNERSHIP,