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Key-Ring Clip.

Description: Patent for new improvements for key ring clips that will not detach in a seated position.
Date: July 6, 1920
Creator: Evans, William
Partner: UNT Libraries Government Documents Department

Pump.

Description: Patent for a pump for deep wells with a "specially constructed piston capable of a powerful working stroke and which will secure at all times a full volume of liquid at each stroke of the pumping rod." (line 25) including instructions and illustrations.
Date: July 6, 1920
Creator: Humason, Granville Allison
Partner: UNT Libraries Government Documents Department

Sanitary Fly Catcher and Trap.

Description: Patent for improvements in traps to bait flies and trap them.
Date: July 6, 1920
Creator: Harris, Raymond J.
Partner: UNT Libraries Government Documents Department

Fire-Extinguishing Device.

Description: Patent for fire extinguishing devices to "supplying steam to the fluid so that oxygen sufficient to support combustion will not reach the flame" (lines 14-16).
Date: July 6, 1920
Creator: Byrd, Williman Harvey
Partner: UNT Libraries Government Documents Department

Crown Setter

Description: Patent for a crown setter that can make impressions of varying sizes with the same tool.
Date: July 6, 1920
Creator: Lewis, Samuel Riley
Partner: UNT Libraries Government Documents Department
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