Actuator linkage for mobile derricks and the like

Adjustable boom for material handling implement

Adjustable jib crane

Anti-lowering device for a boom loader

Anti-sway system for a spreader suspended from a crane

Antipendulation crane

Apparatus and method for transferring a crane boom assembly from

Apparatus for collecting drippings from a wet load carried by a

Apparatus for loading ships or barges

Apparatus for lowering articles from a building

Apparatus for monitoring and recording the load of a crane with

Apparatus for offshore handling and running of a BOP stack

Apparatus for preventing the tilting of telescopic jib cranes

Apparatus for protecting overhead cables

Apparatus for raising & lowering a mast and boom on a mobile cra

Apparatus with pivotal latching means for retaining an outrigger

Aqueous absorption fluids

Arrangement in a hydraulically operated crane

Article exchanging apparatus

Articulated mine service vehicle