Source:Dithridge-chimney
From Pittsburgh Streets
Edward Dithridge. "Lamp-chimney." U. S. patent 95,667, Oct. 12, 1869. http://pdfpiw.uspto.gov/.piw?Docid=00095667, https://patents.google.com/patent/US95667A.
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- This page was last edited on 12 March 2022, at 15:12 UTC.
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