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us0d0006613
Keywords: Pittsburg;Pennsylvania;Allegheny;W. N. Paxton;G. H. Christy

us0d0006613

File information
Filename:us0d0006613-001.jpg
Keywords:Pittsburg / Pennsylvania / Allegheny / W. N. Paxton / G. H. Christy
Inventor's Name:Thomas B. Atterbury
Patent Date:April 29, 1873
Date added:Apr 21, 2019