Building block and wall construction

Claim 1

A wall construction composed of a multiplicity of rectangular building blocks bound together by cement mortar in an arrangement of staggered rows with each building block comprising; four minor side surfaces and two major surfaces, said two major surfaces being on opposite sides of one another with their longer dimensions disposed in a horizontal direction, a plurality of pins extending from one of said major surfaces and arranged in two equal rows each having an even number of pins with each row of pins aligned with the longer dimension in a plane perpendicular to the plane of said major surface and each row extending from said major surface, a distance unequal to the extending distance of the other row of pins, a recessed channel located along the opposite major surface in a corresponding relation with said longer extending row of pins such that the row of longer extending pins from each block extend into the recessed channel of the adjacent lower row of block for forming a reinforced structure with the channel of each row serving as a guide for the emplacement of each adjacent upper row of blocks to assure a true grade.