Abstract: Door lock merchandising display apparatus, systems and methods are disclosed. An exemplary apparatus includes a support structure including first and second fixtures positioned in a merchandise display region. The fixtures are laterally and rotatably movable relative to the support structure. The apparatus includes merchandise modules that include door locks and are detachably coupled with respective fixtures. Interior and exterior portions of the door locks are displayed on respective sides of the modules. A customer can position the fixtures to selectably simultaneously display the interior and exterior portions of the door locks. The apparatus may also include a customer-accessible inventory storage region and a customer interaction unit configured to receive customer input associated with a particular type of door lock and provide an output to the customer identifying a location of the particular type of door lock in the inventory storage region.

Abstract: The present invention discloses methods for filling gaseous hydrogen storage tanks. The methods of the present invention include methods for refilling gaseous hydrogen storage tanks utilizing a cascade fill. The methods of the present invention provide for the efficient refilling of the gaseous hydrogen storage tanks and the efficient dispensing of gaseous hydrogen to hydrogen vehicles.