E21D 1/03

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2024/0368,989 Shaft ExcavatorJul 21, 22Nov 07, 24REDPATH DEILMANN GmbH
2019/0085,689 BOTTOM-SIDE SEPARATION OF AN OBJECT TO BE CUT OUT OF STONEJan 27, 17Mar 21, 19Heindl Energy GmbH
2012/0318,581 FORMING A SHAFT FOR AN UNDERGROUND MINEJun 15, 12Dec 20, 12TECHNOLOGICAL RESOURCES PTY. LIMITED