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Improvement in Vibrating Propellers.
Patent for new and useful improvement in vibrating propellers.
Date:
December 22, 1874
Creator:
Macowitzky, Charles P.
System:
The Portal to Texas History
Improvement in Processes for Preserving Wood.
Patent for preserving wood from the ravages of marine insects (lines 7-8).
Date:
July 28, 1874
Creator:
Archer, Roger W.
System:
The Portal to Texas History