| Name | Street | Town | State | From | To |
|---|---|---|---|---|---|
| Seipel, John | Washington D.C. | Washington D.C. | 1864 | 1866 |
| Patent | Date | Remarks |
|---|---|---|
| 50,502 | October 17, 1856 | Improvement in Rifling Ordnance view patent |
| Contract | for |
|---|---|
| Product |
|---|
|
Percussion plains type rifles marked J. SEIPEL, WASHN. |
