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SU757128A3
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Clutch
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US3978993A
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Vertically adjustable pipe racking apparatus
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US3937515A
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Head for pipe rackers
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US3937514A
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Guide head for pipe rackers
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US3929235A
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System for handling and racking pipe in the hold of a vessel
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US3892148A
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Adjustable power spinning tong
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US3922009A
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Coupling
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US3908967A
|
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Slurry density averaging system and apparatus
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US3900068A
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Stroke type drill stem tester
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US3891033A
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Annulus pressure controlled testing apparatus
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US3873079A
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Belleville spring cartridge
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US3838613A
|
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Motion compensation system for power tong apparatus
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US3884519A
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Safety latch for well pipe elevators
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CA937228A
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Motion compensating hoist
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US4003431A
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Process of cementing wells
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US3859107A
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Method of selectively stimulating oil wells, compositions therefor, and methods of making such compositions
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US3803953A
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Orienting apparatus for threaded well pipe
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US3796418A
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Hydraulic pipe tong apparatus
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US3917230A
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Well drilling control system
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US3812723A
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Force measuring weighing device
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