UNT Libraries Government Documents Department - 2 Matching Results

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Trace Carrier.

Description: Patent for improvements to a harness back band buckle and chain carrier, so that "strain is taken off from the center of the buckle, where the ordinary buckles often break" (lines 71-73), including illustrations.
Date: January 31, 1893
Creator: Nichols, Edward A.

Trephine.

Description: Patent for an improved, simple, durable, inexpensive, and efficient trephine that is easily assembled and takes up little space. It retains better results than other trephines.
Date: March 21, 1893
Creator: MacKenzie, Joseph Alexander
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