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O-ring push-pull pipe joint

Pipe joints or couplings – With assembly means or feature
Patent

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O-ring-less low profile fittings and fitting assemblies

Pipe joints or couplings – Screw thimble-gland
Reexamination Certificate

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Ocean floor riser connection

Pipe joints or couplings – Ball and socket – Radially spaced spherical surfaces
Patent

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Off-set welding ring

Pipe joints or couplings – With assembly means or feature – Molded joint facilitator
Patent

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Offset coupling for electrical conduit

Pipe joints or couplings – With fluid pressure seal – With separate – encased pipe-gripping means
Patent

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Offset nipple

Pipe joints or couplings – With assembly means or feature – Handle or handwheel for rotary engagement
Patent

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Offset plastic flange for connecting toilet bowls to drain pipes

Pipe joints or couplings – Convertible
Patent

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Offshore method

Pipe joints or couplings – With casing – lining or protector – Insulated
Patent

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Offshore structure and method

Pipe joints or couplings – With casing – lining or protector – Insulated
Patent

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Oil cooler mounting unit for automatic transmission

Pipe joints or couplings – Having plural independent paths – Parallel paths
Reexamination Certificate

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Oil cooler with improved coolant hose connection

Pipe joints or couplings – End to side or plate – Penetrating
Patent

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Oil field tubular connection

Pipe joints or couplings – With lubrication
Patent

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Oil field tubular connection

Pipe joints or couplings – With lubrication
Patent

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Oil nozzle lock device

Pipe joints or couplings – With casing – lining or protector
Patent

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Oil or gas field casing

Pipe joints or couplings – Particular interface – Tapered
Patent

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Oil well pipe joint

Pipe joints or couplings – With casing – lining or protector – Lined
Patent

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Oil well pipe joint and manufacturing method therefor

Pipe joints or couplings – With casing – lining or protector – Lined
Patent

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Oil well pipe screw joint, and threading method and...

Pipe joints or couplings – Particular interface – Tapered
Reexamination Certificate

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Oil well pipe threaded joint

Pipe joints or couplings – With casing – lining or protector – Lined
Reexamination Certificate

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Oil well tool with packing means

Pipe joints or couplings – Frangible element
Patent

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