2 Matching Results

Search Results

Patent for a porous pipe and a method of manufacturing it for use in subsoil irrigation.

Date: August 23, 1910

Creator: Ziller, Robert L.

Partner: UNT Libraries Government Documents Department

Patent for a diffusion block for subsoil irrigation, which prevents roots from growing into the pipe that is providing water to the soil.

Date: August 23, 1910

Creator: Ziller, Bessie

Partner: UNT Libraries Government Documents Department