2 Matching Results

Search Results

Results: 1 - 2

Filter for Oil and Other Lubricants.

Description: Patent for improvements in a filter for oil and other lubricants. Designed for the purpose of cleansing oils, particularly waste oils.
Date: October 14, 1919
Creator: Schmidt, George C.
Partner: UNT Libraries Government Documents Department

Core-Barrel.

Description: Patent for a core barrel for use in rotary drilling of oil or water wells, that will allow for easy extraction of the upwardly extending column of material.
Date: October 14, 1919
Creator: Humason, Granville A. & Childs, William L.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen