UNT Libraries Government Documents Department - 4 Matching Results

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Electric Insact Trap.

Patent for an electric insect trap that highly efficient trap for electrocuting house flies and similar insects, include illustrations.

Date: January 20, 1914

Creator: Craig, Samuel A.

Item Type: Patent

Excavator and Conveyer.

Patent for an excavator machine designed "to continuously excavate the ground at different elevations, as in ditching or cutting away embankments" (lines 15-18) including illustrations.

Date: January 6, 1914

Creator: Lee, James Milton

Item Type: Patent

Process of Producing Gas.

Patent for a new method of making gas. The process is a simple and efficient method of making gas continuously, including illustrations.

Date: January 6, 1914

Creator: Hirt, Jules H.

Item Type: Patent

Railway-Switch

Patent for improvements in railway switches which are especially adapted for use on street railway tracks.

Date: January 20, 1914

Creator: Craig, Samuel A.

Item Type: Patent

UNT Libraries Government Documents Department - 4 Matching Results

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Electric Insact Trap.

Excavator and Conveyer.

Process of Producing Gas.

Railway-Switch