5 Matching Results

Search Results

Air Suction and Force Pump

Patent for improvement in suction and force pumps, a pneumatic lift-and-force pump for raising water from wells.

Date: October 7, 1913

Creator: De Hymel, Franklin O.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Aeration and Subirrigation for Promoting Vegetation

Patent for large terminal that can be implanted into the ground, which can supply air and moisture into the surrounding soil to stimulate growth of vegetation.

Date: October 10, 1916

Creator: Rife, Archibald H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

[Letter from I. H. Kempner to Dan Oppenheimer, October 25, 1954]

Letter from I. H. Kempner to Dan Oppenheimer discussing about a letter from the El Paso National Bank in response to one from the United States National Bank inquiring about clientele interested in buying irrigated lands around the El Paso area.

Date: October 25, 1954

Creator: Kempner, Isaac H. (Isaac Herbert), 1873-1967

Item Type: Letter

Partner: Rosenberg Library

Lawn-Sprinkler.

Patent for an inexpensive lawn sprinkler that serves the dual purpose of connecting to a hose to spread the water over a broad area and of holding a hose stationary to water a single area.

Date: December 11, 1917

Creator: Schneider, Gustav H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

System of Irrigation

Patent for an irrigation system. Illustrations included.

Date: March 7, 1911

Creator: Von Hohenstein, Charles H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

5 Matching Results

Search Results

Add Filters

Applied Filters

Air Suction and Force Pump

Aeration and Subirrigation for Promoting Vegetation

[Letter from I. H. Kempner to Dan Oppenheimer, October 25, 1954]

Lawn-Sprinkler.

System of Irrigation