Oil or similar fluid lift piping heating equipment
Oil recovery mining method and apparatus
Oil well pipe joint
Oil well pump with permanent connections and a plunger therefor
Oil well tool with packing means
Oilfield threaded connections
Oilfield tubular connection with increased compression capacity
Oilwell tubing connection
Oilwell tubing connector
One-piece cable tie
One-piece conduit clip
One-piece flexible tube connector and method of making the same
One-piece hanger
One-piece pipe bend or cover for sheathing heat, cold, or...
One-piece pipe insulators
One-piece swivel clip
Open clamp with means for closing the band ends
Open hose clamp with plastically deformable ear and method...
Open type wedgethread connection
Optimization process for the manufacture of composite...