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364,113 · Jacobs · "Illuminating-Tile" · Page 2
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openings contain glass lenses that are each adapted to receive and contain a separate centrally-located lens, substantially as and for the purpose specified.
    2. As an improvement in illuminating-tiles, a lens which is adapted to fit into and be secured within the light-opening of a tile, and is provided with a central opening that is adapted to receive and contain a separately-constructed lens, substantially as and for the purpose shown.
    3. As an improvement in illuminating-tiles, a lens which is fitted into and secured within one of the light-openings and has a central opening, and a second lens that is secured
within and fills the latter, substantially as and for the purpose set forth.
    4. As an improvement in illuminating-tiles, a lens which is composed of an inner section and an outer section that are constructed separately and afterward united, substantially as and for the purpose shown and described.
    In testimony that I claim the foregoing I have hereunto set my hand this 2d day of December, 1886.
JACOB JACOBS.
Witnesses:
    ALEXES R. LATSON,
    AUGUST C. NANZ.