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Process of Refining Asphaltic Mineral Oils.
Patent for process for refining asphaltic mineral oils such as might be found in wells in Texas and Louisiana. Designed to remove asphaltum.
Date:
November 11, 1902
Creator:
Mims, John Carwile
System:
The Portal to Texas History
Bit-Hoist
Patent for easy removal of bits from drilling machines.
Date:
February 11, 1919
Creator:
Parrish, Benjamin Eugene & Stage, Solomon
System:
The Portal to Texas History
Electric Connection for Automobile-Lamps.
Patent for electric connection for automobile lamps that has an improvement in electric connections or plugs for incandescent electric-lamps for automobiles.
Date:
September 11, 1917
Creator:
Kearby, John Gallatin & Robinson, Zephaniah
System:
The Portal to Texas History
Window Structure
Patent for a window structure. This invention includes upper and lower sash frames. Illustrations included.
Date:
February 11, 1913
Creator:
Hatzfield, Charles
System:
The Portal to Texas History