Adjustable angle drive connection for a down hole drilling...

Adjustable backing arrangement for pipe suspending slips

Adjustable bearing section core barrel

Adjustable bent housing

Adjustable bent housing

Adjustable bent housing

Adjustable bent housing apparatus and method

Adjustable bent housing ii

Adjustable bent housing with single offset

Adjustable bent sub

Adjustable bent sub

Adjustable bent sub

Adjustable bent sub

Adjustable bent sub

Adjustable bent sub i

Adjustable blade and carrying means

Adjustable bucket for an earth boring machine

Adjustable casing hanger with contractible load shoulder and...

Adjustable cement head manifold

Adjustable cement head manifold