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631,220 · Manning · "Illuminating Window-Glass" · Page 2
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arranged one in contact with another in permanent relation, and transparent sheets of soluble glass covering the light-receiving and light-discharging surfaces of the panel and united with the edges of said blocks, substantially as described.
    4. In an illuminating structure, a panel formed of a series of transparent blocks arranged one in contact with another in permanent relation, and a transparent sheet of
glass applied in a softened state to the surface of the panel and united with the edges of said blocks, substantially as described.
    In testimony whereof I affix my signature in presence of two witnesses.
CHARLES E. MANNING.
Witnesses:
    E. A. COLVIN,
    HENRY H. SHERWOOD.