Abstract: An anti-slip attachment for each side rail of a ladder, designed to keep the ladder a predetermined distance away from a side wall of a building, has a bevelled end that allows a backing plate attached thereto and on which a resilient pad and a removable cover are mounted, to pivot at an angle of 0.degree.-25.degree. with respect to the axis of the ladder.

Abstract: There is disclosed a multiple gaseous discharge display/memory panel having an electrical memory and capable of producing a visual display, the panel being characterized by an ionizable gaseous medium in a gas chamber formed by a pair of opposed dielectric material charge storage members which are respectively backed by a series of parallel-like conductor (electrode) members, the conductor members behind each dielectric material member being transversely oriented with respect to the conductor members behind the opposing dielectric material member so as to define a plurality of discrete discharge volumes constituting a discharge unit, the surface of the dielectric material having at least one oxide of Al, Ti, Zr, Hf, and Si applied thereto in an amount sufficient to provide stable panel operating voltages which do not significantly change with panel operating time.