4. Boots, shoes, and leggings

Anatoly A. Pevnev

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Automated apparatus for handling elongated well elements such as

Boots – shoes – and leggings
Patent

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Automatic wrench for screwing a pipe string together and apart

Tools – Wrench – screwdriver – or driver therefor – Responsive to movement of work
Patent

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Well tubing handling apparatus

Boring or penetrating the earth – With orienting or racking means for unconnected tools or...
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Well tubing handling apparatus

Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
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Profile ID: LFUS-PAI-P-1140747

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