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us0d0007758
Keywords: Pittsburgh;Pennsylvania;Allegheny;Joseph K. Brown;Andrew Humbert

us0d0007758

File information
Filename:us0d0007758-001.jpg
Keywords:Pittsburgh / Pennsylvania / Allegheny / Joseph K. Brown / Andrew Humbert
Inventor's Name:Lorenz Stoehr
Patent Date:September 15, 1874
Pattern Name/Number:Block & Honeycomb
Original Manufacturer:McKee & Brothers
Date added:Apr 21, 2019