Stacking and nesting container

Claim 1

A CONTAINER STACKABLE ON A LIKE CONTAINER AND NESTABLE THEREIN WHEN TURNED END-FOR-END RELATIVE THERETO COMPRISING: A BOTTOM, A FIRST WALL ATTACHED TO SAID BOTTOM AT ONE EDGE THEREOF HAVING AT LEAST ONE INWARDLY EXTENDING PORTION AND AT LEAST ONE OUTWARDLY EXTENDING PORTION, A SECOND WALL ATTACHED TO SAID BOTTOM AT AN EDGE THEREOF OPPOSITE TO SAID ONE EDGE HAVING AT LEAST ONE INWARDLY EXTENDING PORTION ADAPTED TO BE VERTICALLY MATABLE WITH AN OUTWARDLY EXTENDING PORTION OF A FIRST WALL OF A LIKE CONTAINER WHEN TURNED END-FOR-END RELATIVE THERETO AND STACKED THEREUNDER AND AT LEAST ONE OUTWARDLY EXTENDING PORTION ADAPTED TO BE VERTICALLY MATABLE WITH AN INWARDLY EXTENDING PORTION OF A FIRST WALL OF A LIKE CONTAINER WHEN TURNED END-FOR END RELATIVE THERETO AND STACKED THEREUNDER, SAID INWARDLY EXTENDING PORTIONS HAVING SHELF PORTIONS AT AN UPPER EXTREMITY THEREOF FORMED WITH INCLINED SURFACES THAT EXTEND UPWARDLY AND INWARDLY FROM EACH RESPECTIVE ADJACENT WALL, SAID SURFACES HAVING APERTURES FORMED THEREIN INTERMEDIATE THE SIDES THEREOF, SAID APERTURES HAVING AT LEAST ONE SIDE EXTENDING GENERALLY PARALLEL TO THE RESPECTIVE WALL AND A PAIR OF ENDS EXTENDING GENERALLY PERPENDICULAR TO THE RESPECTIVE WALL, AND A PLURALITY OF PROJECTIONS VERTICALLY ALIGNED WITH EACH OF SAID OUTWARDLY EXTENDING PORTIONS AND DEPENDING FROM SAID BOTTOM, EACH SAID PROJECTION HAVING A SUBSTANTIALLY VERTICAL INNER SURFACE FOR POSITIVELY ENGAGING ONE SIDE OF APERTURES OF A LIKE CONTAINER WHEN TURNED END-FOR-END RELATIVE THERETO AND STACKED THEREON TO PRECLUDE LATERAL MOVEMENT OF SAID PROJECTIONS IN THE APERTURES AND A PAIR OF END SURFACES ADAPTED TO ENGAGE THE PAIR OF APERTURE ENDS OF THE LIKE CONTAINER TO PRECLUDE TRANSVERSE MOVEMENT OF SAID PROJECTIONS IN THE APERTURES.