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272,551 · Hyatt · "Illuminating Vault-Cover or Grating-Tile and Surfaces Made of the Same" · Page 3 Home  > Prism Glass  > Patent Index  > Page 3

272,551: 3 of 6

artificial wood, or fibered material, substantially as and for the purposes herein set forth and illustrated.     3. Illuminating vault-covers or grating-tiles and surfaces made of them when the same are made by combining glasses with corrugated paper-boards, artificial wood, or fibered material, substantially as and for the purposes herein set forth and illustrated.

4. Illuminating elevator-doors made by combining glasses with paper-boards, artificial wood, or fibered material, substantially as and for the purposes herein set forth and illustrated. THADDEUS HYATT. Witnesses:     LLOYD F. KELEHER,     T. C. BRECHT.