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Propeller
Patent for a boat propeller that does not create a vacuum behind it and is more efficient than other propellers.
Date:
July 23, 1912
Creator:
Blake, David H.
Object Type:
Patent
System:
The Portal to Texas History
[Handwritten Letter from I. H. Kempner to Harris Leon Kempner, August 23, 1954]
Letter from I. H. Kempner to Harris Leon Kempner discussing a bill and about the situation in Pecos.
Date:
August 23, 1954
Creator:
Kempner, Isaac H. (Isaac Herbert), 1873-1967
Object Type:
Letter
System:
The Portal to Texas History