. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . , PHOTO-UTHOQRSPHER. WASHINGTON. D. C. 2 Sheets—Sheet 2. T. A. Machine. No. 219,393. Patented Sept. 9, 1879, Cowe Ho. /80.
Size: 2060px × 1213px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
