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Dentistry

Description: Patent for a device to tighten and hold loose teeth to the jaw.
Date: November 11, 1902
Creator: Martin, George G.
Partner: UNT Libraries Government Documents Department

Calculator

Description: Patent for a calculator which consists of semicircular device with movable pointers and number indexes printed on it that allows the pointers to be moved to different numbers to produce the answer to a math problem such as calculating the cost of goods sold by the pound in a store.
Date: December 21, 1909
Creator: Goss, George Wilson
Partner: UNT Libraries Government Documents Department

Cigar-Tip Cutter.

Description: Patent for a cigar clipper that enables the clipper to fold compactly along the edge of the cigar box when not in use.
Date: September 23, 1913
Creator: Miller, Robert E.
Partner: UNT Libraries Government Documents Department
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