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74261390 - MARC 1
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Serial number 74261390
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Registration number 1782963
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Filing date Apr 1, 1992
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TELECO OILFIELD SERVICES, INC.
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40 - Treatment of materials
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74261541 - DUAL PROPAGATION RESISTIVITY
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Serial number 74261541
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Filing date Apr 1, 1992
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TELECO OILFIELD SERVICES, INC.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74214692 - EFFICIENCY-WHILE-DRILLING
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Serial number 74214692
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Filing date Oct 23, 1991
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TELECO OILFIELD SERVICES, INC.
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42 - Scientific and technological services and research and design relating thereto
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74214691 - EWD
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Serial number 74214691
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Filing date Oct 23, 1991
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TELECO OILFIELD SERVICES, INC.
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42 - Scientific and technological services and research and design relating thereto
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74149838 - DUAL PROPAGATION RESISTIVITY
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Serial number 74149838
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Filing date Mar 21, 1991
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TELECO OILFIELD SERVICES, INC.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74149839 - DPR
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Serial number 74149839
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Registration number 1674905
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Filing date Mar 21, 1991
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TELECO OILFIELD SERVICES, INC.
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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73261124 - TELECO
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Serial number 73261124
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Registration number 1195922
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Filing date May 7, 1980
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Teleco Oilfield Services Inc.
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42 - Scientific and technological services and research and design relating thereto