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Photographic Copying Apparatus
Patent for a simple and effective photographic-copying apparatus capable of making copies of small objects of different sizes. The machine is for general commercial use "that may be successfully operated by persons not particularly skilled in the photographic art" (lines 23-25) including illustrations.
Date:
February 2, 1915
Creator:
Gregory, Oscar T. & Carkhuff, Norman W.
System:
The Portal to Texas History