Venetian blind slat and cross tape construction

Claim 1

IN A VENETIAN BLIND OF THE FULL-CLOSURE TYPE IN WHICH (A) A PLURALITY OF PLASTIC LADDERS HAVE FRONT AND REAR VERTICAL TAPES, (B) THE VERTICAL TAPES ARE INTERCONNECTED BY VERTICALLY-SPACED CROSS TAPES, (C) THE CROSS TAPES HAVE FRONT AND REAR ENDS, (D) CROWNED SLATS ARE SUPPORTED BY THE CROSS TAPES, (E) THE SLATS HAVE FRONT AND REAR EDGES, AND (F) THE SLATS ARE SPACED AND THE BLIND CONSTRUCTED TO AFFORD OVERLAPPING AND CONTACT OF THE SLATS WHEN THE SLATS ARE FULLY TILTED IN ONE DIRECTION, WHICH DIRECTION IS NORMALLY WITH THE REAR EDGES OF THE SLATS DEPRESSED; THE IMPROVEMENT WHICH COMPRISES: THE CROSS TAPES BEING SUBSTANTIALLY LONGER THAN THE WIDTH OF THE SLATS, THE SLATS AND CROSS TAPES BEING PREFORMED WITH DEFINITELYLOCATED COMPLEMENTARY-FORMATIONS, SUCH FORMATIONS BEING LOCATED TOWARD THE FRONT AND REAR EDGES RESPECTIVELY OF THE SLATS, AND TOWARD THE FRONT AND REAR ENDS RESPECTIVELY OF THE CROSS TAPES, AND SUCH FORMATIONS BEING LOCATED AT PREDETERMINED INWARD SPACINGS FROM THE EDGES OF THE SLATS AND THE ENDS OF THE CROSS TAPES RESPECTIVELY THE COMPLEMENTARY FORMATIONS OF THE SLITS-AND-CROSSTAPES PROVIDING SHOULDERS ON THE CROSS TAPES WHICH OVERLIE THE SLATS AT PREDETERMINED INWARD DISTANCES FROM THE EDGES OF THE SLATS AND A PREDETERMINED INWARD DISTANCES FROM THE ENDS OF THE CROSS TAPES, SUCH INWARD DISTANCES BEING PRE-ESTABLISHED BY THE PREFORMING OF THE SLATS AND CROSS TAPES, SAID CROSS-TAPE SHOULDERS HOLDING THE SLATS AGAINST THE CROSS TAPES AT LOCTIONS THAT ARE TOWARD THE FRONT AND REAR EDGES OF THE SLATS, AND THE CROSS-TAPE SHOULDERS THAT ARE TOWARD THE FRONT EDGES OF THE SLATS CO-OPERATING WITH THE CROSS-TAPE SHOULDERS THAT ARE TOWARD THE REAR EDGES OF THE SLATS TO RETAIN THE SLATS AT PREDETERMINED INTERMEDIATE POSITIONS ALONG THE LENGTHS OF THE CROSS TAPES.