Means for Reducing Wear in the Working Barrels of Pumps
Description:
Patent for a means of reducing wear in the working barrels of pumps. The pumps made in this wat are specially adapted for operations in water or oil wells where the fluid being pumped is is mixed with sand and sediment.
Date:
March 4, 1919
Creator:
Carmichael, Robert E.
Partner:
UNT Libraries Government Documents Department