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Dauchy Pamphlet 6 of 8
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part of the glass, whereas in the Ross Patent the glass cannot
be loosened and cannot be got out without breaking it to pieces. In the
Ross work the plates holding the glass are made flat on the bottom, it not
being necessary to chamfer the edges of the holes to give greater dispersion
to the light, but the glass being close against the plate and extending
below it the plate will not be so liable to rust, and the moisture of
condensation runs on the glass as the lowest point and is easily wiped off.
Applications for this work must made to
DAUCHY & CO.,
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| 126 & 127 Indiana St., |
Chicago, Ill. |
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