134349 ⎘
Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings ; Features of rigidly-mounted outer frames relating to the mounting of wing frames; Wing frames not characterised by the manner of movement; Frames with special provision for insulation with arrangements reducing the heat transmission, other than an interruption in a metal section with coatings reducing the radiation