(under subclass 103) Structure including a visible component that permits the passage of light.
SEE OR SEARCH THIS CLASS, SUBCLASS:
306+, for a glass block or embedded translucent component.
SEE OR SEARCH CLASS
428, Stock Material or Miscellaneous Articles,
34, for a pair of substantially coextensive light transmissive sheets, spaced from each other and sealed at their edges to each other, and subclass 38 for a light transmissive mass having a frame or an opaque border around it.
