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6 results for "Pittsburgh Plate Glass Co." in Creator.
Found in catalogs (4)
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Educational Screen 1938 — page 104
…The Kodaslide Metal Frame consists of a double mask, two polished glass plates and an interlocking metal frame made in two parts. Masks are…
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Educational Screen 1939 — page 97
…30 years of experience in making screens for all projection condi- tions have shown Da-Lite that the glass- beaded surface is the most…
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Educational Screen 1948-1949 — page 127
…These are used by our photog- rapher to reproduce the picture on 3!4 .x 4 lantern slide plate, a glass plate coated with…
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Educational Screen 1954,1955,1956 — page 378
…Complete film protection is aflorded by "breathing" glass pressure plates which open before the film advances. Only when the film is in place do…