Display system for spectacles comprises vertical boards , over which one arm of spectacle hangs, other arm being folded back between lenses and front of board, so that spectacles are supported by one hinge
摘要
<p>The display system for spectacles (2) comprises vertical boards (11), over which one arm of the spectacle hangs. The other arm is folded back between the lenses and the front of the board, so that the spectacles are supported by one hinge.</p>
