Building Block Machine
Description:
Patent for a building block machine. This invention is used to form blocks out of plastic material into artificial stone, as well as molding concrete blocks. Illustrations included.
Date:
November 20, 1906
Creator:
Latimer, Samuel A.; Dunkin, James J.; Stacey, J. H.; Hall, A. L.; Porter, R. S.; Haynes, S. F. et al.
Item Type:
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