| Name | Street | Town | State | From | To |
|---|---|---|---|---|---|
| Sewall, Minott W. | New York | New York | 1890 |
| Patent | Date | Remarks |
|---|---|---|
| 430,086 | June 10, 1890, Nat. W. Pratt and Minott W. Sewall joint patent | Firing-Valve-Controlling Mechanism for Pneumatic Guns view patent |
| Contract | for |
|---|---|
| Product |
|---|
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