THERMO-PANEL CONSTRUCTIONS MADE EXCLUSIVELY BY WINNEBAGO INDUSTRIES,INC., FOREST CITY,IOWA

SANDWICH-TYPE CONSTRUCTION PANEL, A FOAM CORE BETWEEN SHEETS OF METAL AND/OR WOOD, AND COMPONENTS OF MODULAR STRUCTURES-NAMELY, VACATION HOMES, LAKESIDE COTTAGES, BEACH HOMES, CABANAS, FISH HOUSES, UTILITY SHEDS, SIGNS, SIGN BOARDS, BUNK HOUSES, COMMERCIAL CAR WASHES, CURTAIN WALLS, AND BUILDING PARTITIONS