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Improvement in Air-Pressure Fluid-Vents.
Patent for "new and useful improvements in air-pressure automatic fluid vents for the use in the discharge of all liquids" (lines 3-6), including instructions and illustrations.
Date:
December 25, 1877
Creator:
Park, Hardy B.
System:
The Portal to Texas History
Emergency-Tire.
Patent for a spare automobile tire with improvements to the design which allow it be easily applied on the road in case of emergency.
Date:
December 25, 1917
Creator:
Poe, James G.
System:
The Portal to Texas History