A hole-making device
A hoop for a safety cage assembly of a ladder
A horizontal directional drilling system
A hot tub covering system
A housing to facilitate the alignment and replacement of a...
A hybrid riser configuration
A hybrid structural module
A hydraulic arrangement for turning the actuator of a rock...
A hydraulic device to be connected in a pipe string
A hydraulic impact motor
A hydraulic jar and an overpressure relief mechanism therefore
A hydraulic percussive in-hole rock drilling machine
A hygienic cleaning apparatus and a cleanup support for use...
A jar for use in a downhole toolstring
A joining structure
A joint frame for the frames of doors and windows
A key and lock device utilizing non-authorised and...
A key with a disk arrangement and a method for setting a...
A kind of board used in building construction and furniture...
A kind of construction material for hollow brick or hollow...