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us0d0004457
Keywords: Pittsburg;Pennsylvania;Allegheny;John Beam;John C. Stevenson

us0d0004457

File information
Filename:us0d0004457-001.jpg
Keywords:Pittsburg / Pennsylvania / Allegheny / John Beam / John C. Stevenson
Inventor's Name:James S. Atterbury & Thomas B. Atterbury
Patent Date:November 8, 1870
Pattern Name/Number:Unknown
Original Manufacturer:Unknown
Date added:Apr 20, 2019