sections of the same same portions of the projection screen, thus insuring photographic plate are exposed successively through that might endanger the slides are absorbed. three color screens corresponding with the three The projection objectives have been especially con- perfect coincidence.… … At an international photographic apparatus, to match race run in two the improvement of the heats and a final on the photographic plates used Empire track October 29, Barney Oldfield, on the 60- from 30 to 50 cm. On the very substantial bed plate for the purpose, and finally to the technical design…
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