Metal clapboard siding for buildings

Claim 1

IN A BUILDING STRUCTURE HAVING A VERTICAL WALL SURFACE, A PLURALITY OF HORIZONTALLY DISPOSED SIDING STRIPS MOUNTED ON HORIZONTALLY DISPOSED, VERTICALLY SPACED AND PARALLEL SECURING STRIPS WHICH ARE FASTENED TO SAID WALL SURFACE, EACH OF SAID SECURING STRIPS HAVING A BODY WHICH ENGAGES SAID WALL SURFACE WHEN THE STRIP IS FASTENED THERETO AND HAVING AN ANGULAR ATTACHING BEND EXTENDING UPWARDLY AND OUTWARDLY FROM SAID BODY TO A DOWNTURNED HOOK-RECEIVING LIP WHICH IS SPACED OUTWARDLY OF SAID BODY AND HAS A CONVEX UPPER SURFACE AND A CONCAVE LOWER SURFACE, EACH OF SAID SIDING STRIPS COMPRISING A PANEL WITH AN INWARDLY EXTENDING DOWNTURNED HOOK POTION ON ITS UPPER EDGE WHICH IS PROVIDED WITH A CONVEX UPPER SURFACE AND A CONCAVE LOWER SURFACE WHICH IS COMPLEMENTAL TO AND IS DISPOSED WITHIN SAID HOOK-RECEIVING LIP OF THE NEXT HIGHER ADJACENT SECURING STRIP, SAID PANEL HAVING AN INVERTED USHAPED CHANNEL PORTION ON ITS LOWER EDGE WHICH HAS A CONVEX UPPER SURFACE AND A CONCAVE LOWER SURFACE AND WHICH IS COMPLEMENTAL TO AND IS DISPOSED OVER THE HOOK-RECEIVING LIP OF THE NEXT LOWER ADJACENT SECURING STRIP.