| FILE 85/142 | ![]() |
![]() |
![]() |
![]() |
|
||
|
| 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 |