| FILE 18/142 | ![]() |
![]() |
![]() |
![]() |
|
||
|
| File information | |
| Filename: | us0d0003094-001.jpg |
| Keywords: | Boston / Massachusetts / J. M. Merrick, Jr. / H. D. Duper / Maple Leaf |
| Inventor's Name: | George L. Underwood |
| Patent Date: | June 30, 1868 |
| Pattern Name/Number: | Unknown |
| Original Manufacturer: | Unknown |
| Date added: | Apr 19, 2019 |