| Name | Street | Town | State | From | To |
|---|---|---|---|---|---|
| Jenks-Merrill |   | Baltimore | Maryland | 1858 | 1860 |
| Patent | Date | Remarks |
|---|---|---|
|   |   |   |
| Contract | for |
|---|---|
|   |   |
| Product |
|---|
|
Alternation of the Jenks "mule ear" Carbine to a breech loading system, marked "J.H. Merrill Balto./Pat. July 1858.". Approximately 300 were altered between 1858 and 1860. |