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Photographic Copying Apparatus

Description: 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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Seal-Lock.

Description: Patent for car locks "that cannot be tampered with without the fact being readily perceptible, and thus prevent the car passing unobserved the point where such lock was opened." (Lines 13-16) Includes instructions and illustrations.
Date: February 2, 1897
Creator: Haley, Fred H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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