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Improvement in Car-Couplings.
Patent for an improvement in car-couplings with illustrations.
Date:
May 30, 1876
Creator:
Darrow, Nicholas
System:
The Portal to Texas History
Improvement in Teeth for Cotton-Gin Saws.
Patent for new useful improvement of the cotton-gin saws that consists of the dress or shape of the teeth, includes instructions and illustrations.
Date:
May 6, 1873
Creator:
Oglesby, Thomas B.
System:
The Portal to Texas History