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Rotary

Description: Patent for a rotary with the rotary table secured onto the base. Illustrations included.
Date: November 19, 1912
Creator: Decker, Harry R.
Partner: UNT Libraries Government Documents Department

Drill

Description: Patent for a drill used for rotary drilling. Illustrations included.
Date: November 19, 1912
Creator: Sullivan, James C.
Partner: UNT Libraries Government Documents Department

Attachment for Dental Instruments.

Description: Patent for a dental instrument which is to attach to a dental drill handle. Protecting the patient's tongue from being cut by the drill or grinding disk while the patient's lower teeth are being operated on, including illustrations.
Date: November 19, 1918
Creator: Luzzi, August F.
Partner: UNT Libraries Government Documents Department
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