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Claim 1

A STACKABLE THREE-COMPARTMENT CONTAINER OF PACKAGING A MULTIPLICITY OF GENERALLY CIRCULAR ARTICLES OF THE SAME SIZE COMPRISING A SINGLE MOLDED SHEET OF RESINOUS MATERIAL WHICH MAY BE FOLDED BACK UPON ITSELF TO PROVIDE TWO CONTAINER HALVES OF DIFFERENT SHAPE THAT ARE UNITED BY AN INTEGRAL HINGE AND THAT FIT TOGETHER AT THE MARGIN TO DEFINE A CLOSED CONTAINER HAVING THREE PARALLEL AXIALLYELONGATED COMPARTMENTS, THE UPPER ONE OF THE SAID TWO HALVES HAVING A CENTRAL GENERALLY SEMI-CYLINDRICAL WALL PORTION WHICH PROJECTS UPWARDLY MIDWAY BETWEEN THE ENDS OF THE CONTAINER AND CORRUGATED WALL PORTIONS OF LESSER HEIGHT ON OPPOSITE SIDES OF SAID CENTRAL PORTION, SAID WALL PORTIONS TERMINATING IN ROUNDED TRIANGULOIDAL END WALLS AT OPPOSITE ENDS OF THE CONTAINER, THE LOWER ONE OF SAID HALVES HAVING TWO GENERALLY SEMI-CYLINDRICAL WALL PORTIONS AT OPPOSITE ENDS OF THE CONTAINER WHICH PROJECT DOWNWARDLY AND WHICH HAVE AXES PARALLEL TO THE AXIS OF SAID FIRST-NAMED SEMI-CYLINDRICAL WALL PORTION AND SPACED APART A DISTANCE GREATER THAN 3 TIMES THE RADIUS OF EACH OF SAID WALL PORTIONS SUCH THAT, WHEN TWO OF SUCH CLOSED CONTAINERS ARE STACKED VERTICALLY, THE BOTTOM SURFACES OF BOTH OF THE TWO DOWNWARDLY PROJECTING SEMI-CYLINDRICAL WALL PORTIONS OF ONE CONTAINER ENGAGE AND INTERLOCKED WITH THE UNDERLYING CONTAINER ON OPPOSITE SIDES OF THE CENTRAL UPWARDLY PROJECTING SEMI-CYLINDRICAL PORTION OF SAID UNDERLYING CONTAINER, EACH OF SAID SEMI-CYLINDRICAL WALL PORTIONS HAVING CORRUGATIONS WITH AT LEAST FIVE ANNULAR GROOVES OF A SIZE TO RECEIVE THE MARGINAL EDGE PORTIONS OF SAID CIRCULAR ARTICLES, SAID TWO HALVES BEING ENGAGEABLE WITH THE TOP AND BOTTOM EDGE PORTIONS OF SAID ARTICLES TO HOLD THEM IN PLACE IN THREE PARALLEL ROWS WHEN THE CONTAINER IS CLOSED.