3 Matching Results

Search Results

Results: 1 - 3

Reaming-Drill.

Description: Patent for a reaming drill which is meant to improve cutting into hard rock.
Date: November 12, 1918
Creator: Reed, Clarence Edward
Partner: UNT Libraries Government Documents Department

Horizontal-Drilling Machine

Description: Patent for a horizontally boring drill for use in trench warfare, including illustrations.
Date: November 26, 1918
Creator: Hughes, Howard R.
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
Back to Top of Screen