GB8418185D0
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Test tree
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JPS56108492A
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Side pocket mandrel and its manufacture
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GB2028400A
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Production from and servicing of wells
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GB2051126A
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Low alloy steel
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JPS55149075A
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Pressure*temperature*time down hole recorder for microprocessor computer processing
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GB1594913A
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Coupling for connecting conduit sections
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GB1561847A
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Locating and locing apparatus for oil or gas well tools
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US3845815A
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Well tools
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US3837398A
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Kickover tool
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US3831676A
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Stuffing box for wireline well apparatus
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US3826462A
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Large bore rotary safety valves for wells
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US3856081A
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Locking devices
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US3842853A
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Fire safety valve
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US3848668A
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Apparatus for treating wells
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US3732928A
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Method of and apparatus for removing and positioning well tools in offset landing nipples
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US3739850A
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Cross over assembly
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US3710862A
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Method and apparatus for treating and preparing wells for production
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US3762725A
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Wireline stuffing box and sheave
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US3792732A
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Well flow controlling system and apparatus
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US3778089A
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Pipe coupling
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