Resource Type
Counties
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Improvement in Permutation Locks.
Patent for improvements to permutation locks by various means.
Date:
September 27, 1870
Creator:
Hall, William
System:
The Portal to Texas History
Improvement in Carriage-Axles.
Patent for an easily replaceable and self-lubricating carriage axle. Includes instructions and illustrations.
Date:
July 26, 1870
Creator:
Hall, William N.
System:
The Portal to Texas History