Source:Aiken
From Pittsburgh Streets
Henry Aiken. "Brick-machine." U. S. patent 459,878, Sept. 22, 1891. http://pdfpiw.uspto.gov/.piw?Docid=00459878, https://patents.google.com/patent/US459878A.
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- This page was last edited on 19 February 2022, at 13:51 UTC.
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