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Rock cutting device
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Patent number 11,846,190
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Issue date Dec 19, 2023
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Joy Global Underground Mining LLC
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Peter A. Lugg
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E21 - EARTH DRILLING MINING
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Cutting apparatus
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Patent number 10,683,751
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Issue date Jun 16, 2020
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Sandvik Intellectual Property AB
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Georg Scherz
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Cutting apparatus and method of operating
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Patent number 10,352,166
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Issue date Jul 16, 2019
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Sandvik Intellectual Property AB
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Bernhard Ebner
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Cutting apparatus
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Patent number 10,208,596
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Issue date Feb 19, 2019
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Sandvik Intellectual Property AB
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Bernhard Ebner
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E21 - EARTH DRILLING MINING
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Boring rig
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Patent number 7,357,458
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Issue date Apr 15, 2008
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Atlas Copco Rock Drills AB
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Sverker Hartwig
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E21 - EARTH DRILLING MINING
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Mining machine for extraction of minerals
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Patent number 4,508,391
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Issue date Apr 2, 1985
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Gosudarstvenny Proektno-Konstruktorsky I Experimentalny Institut Ugolnogo Mas...
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Jury N. Spektor
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E21 - EARTH DRILLING MINING
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3915500
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Patent number 3,915,500
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Issue date Oct 28, 1975
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E21 - EARTH DRILLING MINING
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3899212
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Patent number 3,899,212
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Issue date Aug 12, 1975
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E21 - EARTH DRILLING MINING
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3861750
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Patent number 3,861,750
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Issue date Jan 21, 1975
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E21 - EARTH DRILLING MINING
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3854775
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Patent number 3,854,775
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Issue date Dec 17, 1974
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E21 - EARTH DRILLING MINING
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3779604
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Patent number 3,779,604
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Issue date Dec 18, 1973
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E21 - EARTH DRILLING MINING
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3754790
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Patent number 3,754,790
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Issue date Aug 28, 1973
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E21 - EARTH DRILLING MINING