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Box Bull and Calf Wheel Gudgeon.
Patent for protection and strengthening of box bull and calf wheel gudgeons. The purpose is to prevent various troubles with well drilling (oil, etc.).
Date:
July 19, 1921
Creator:
Taylor, James Thomas
System:
The Portal to Texas History
Apparatus for Manufacturing Heating and Illuminating Gas
Patent for an apparatus for manufacturing heating and illuminating gas. Illustration included.
Date:
July 19, 1910
Creator:
Wynne, Milton P. & Wagley, Samuel L.
System:
The Portal to Texas History
Indicator for Pressure Gages
Patent for an indicator for pressure gages. Illustration included.
Date:
July 19, 1910
Creator:
Fields, Roberts E.
System:
The Portal to Texas History