LAMINATED ARCHITECTURAL METAL PANELS USED IN EXTERNAL AND INTERNAL CONSTRUCTIONS; CURTAIN WALLS IN THE NATURE OF ACOUSTICAL PARTITIONING MADE PRIMARILY OF METAL; FOLDABLE BUILDING WALLS MADE PRIMARILY OF METAL; AND FOLDABLE PARTITIONING WALLS MADE PRIMARILY OF METAL

FOLDABLE BUILDING WALLS MADE PRIMARILY OF NON-METAL; FOLDABLE PARTITIONING WALLS MADE PRIMARILY OF NON-METAL