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Drill rig relocation system
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Patent number 9,168,962
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Issue date Oct 27, 2015
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T & T Engineering Services, Inc.
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Mark W. Trevithick
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Drill rig moving system
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Patent number 8,925,658
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Issue date Jan 6, 2015
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T & T Engineering Services, Inc.
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F. Allan Bryant
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Pivot locking device
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Patent number 5,855,467
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Issue date Jan 5, 1999
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Long-Airdox Company
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David M. Clonch
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B60 - VEHICLES IN GENERAL
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Pivoted lifting device
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Patent number 5,664,932
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Issue date Sep 9, 1997
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Long-Airdox Company
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David M. Clonch
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B60 - VEHICLES IN GENERAL
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Mobile lifting jack
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Patent number 4,756,509
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Issue date Jul 12, 1988
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United States of America as represented by the Secretary of the Interior
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Richard L. Unger
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B66 - HOISTING LIFTING HAULING
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Material handling system
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Patent number 4,692,085
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Issue date Sep 8, 1987
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Teledyne Canada Limited
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Michael Parsons
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B66 - HOISTING LIFTING HAULING
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Vehicle oscillation lock
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Patent number 4,465,293
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Issue date Aug 14, 1984
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Envirotech Corporation
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William S. McNab
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E21 - EARTH DRILLING MINING
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Conveyor mounted vehicle
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Patent number 4,240,665
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Issue date Dec 23, 1980
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Perard Engineering Limited
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Terence Hubbard
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E21 - EARTH DRILLING MINING
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Issue date Sep 10, 1974
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B60 - VEHICLES IN GENERAL
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Patent number 3,799,063
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Issue date Mar 26, 1974
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B60 - VEHICLES IN GENERAL