Name | Street | Town | State | From | To |
---|---|---|---|---|---|
Langdon, W. G. |   | Boston | Massachusetts | 1857 | 1866 |
Patent | Date | Remarks |
---|---|---|
54,068 | April 17, 1866 | See Joshua Gray for the patent |
Contract | for |
---|---|
Government, in 1862 | Sniper's rifles and telescopic sights |
Product |
---|
  |