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Well treating apparatus and method
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Fluid pressure operated bottom hole chemical injector
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Fluid pressure operated chemical feeder
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Wire line releasable slip-type fishing tool
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Pump for propelling pellets into oil wells for treating the same
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Hydraulic acting jet gun for perforating well casings
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Well perforating apparatus
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Seal for well tubing
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Rock-drill.
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Fluid pressure operated chemical feeder and method
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Hydraulic acting jet gun for perforating well casings
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Wire line releasable slip-type fishing tool
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