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Mine safety system and method
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Patent number 10,837,281
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Issue date Nov 17, 2020
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REAL INNOVATIONS AUSTRALIA PTY LTD
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Wade Kathage
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E21 - EARTH DRILLING MINING
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Rock dusting apparatus
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Patent number 8,827,190
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Issue date Sep 9, 2014
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Larry Redman
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E21 - EARTH DRILLING MINING
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Rock dust blower and method
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Patent number 8,613,401
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Issue date Dec 24, 2013
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Hafco Foundry and Machine Company, Incorporated
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Michael J. Fornaci
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Rock dusting apparatus
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Patent number 8,584,974
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Issue date Nov 19, 2013
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DSI Underground Systems, Inc.
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Brian Peter Masloff
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E21 - EARTH DRILLING MINING
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Hydraulic system valving
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Patent number 7,854,402
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Issue date Dec 21, 2010
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Tonny D. Travis
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Rock dusting apparatus
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Patent number 6,135,368
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Issue date Oct 24, 2000
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John M. Protan
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E21 - EARTH DRILLING MINING
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Dusting apparatus
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Patent number 4,872,598
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Issue date Oct 10, 1989
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Tonny D. Travis
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E21 - EARTH DRILLING MINING
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Mine dusting machine
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Patent number 4,673,131
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Issue date Jun 16, 1987
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Tonny D. Travis
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E21 - EARTH DRILLING MINING
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Rock dust blower
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Patent number 4,394,975
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Issue date Jul 26, 1983
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Clyde A. Bare
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E21 - EARTH DRILLING MINING
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3809439
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Patent number 3,809,439
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Issue date May 7, 1974
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E21 - EARTH DRILLING MINING
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3367541
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Patent number 3,367,541
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Issue date Feb 6, 1968
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E21 - EARTH DRILLING MINING
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3333896
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Patent number 3,333,896
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Issue date Aug 1, 1967
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E21 - EARTH DRILLING MINING
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3306676
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Patent number 3,306,676
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Issue date Feb 28, 1967
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E21 - EARTH DRILLING MINING
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3237993
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Patent number 3,237,993
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Issue date Mar 1, 1966
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E21 - EARTH DRILLING MINING
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3194443
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Patent number 3,194,443
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Issue date Jul 13, 1965
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E21 - EARTH DRILLING MINING
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3039827
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Patent number 3,039,827
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Issue date Jun 19, 1962
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E21 - EARTH DRILLING MINING
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2521888
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Patent number 2,521,888
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Issue date Sep 12, 1950
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E21 - EARTH DRILLING MINING
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2489090
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Patent number 2,489,090
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Issue date Nov 22, 1949
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E21 - EARTH DRILLING MINING
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2290809
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Patent number 2,290,809
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Issue date Jul 21, 1942
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E21 - EARTH DRILLING MINING
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2258117
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Patent number 2,258,117
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Issue date Oct 7, 1941
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E21 - EARTH DRILLING MINING
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2053825
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Patent number 2,053,825
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Issue date Sep 8, 1936
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E21 - EARTH DRILLING MINING
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1871516
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Patent number 1,871,516
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Issue date Aug 16, 1932
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E21 - EARTH DRILLING MINING