| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Nelson N. Spofford | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 237,780 | Feb. 15, 1881 | N.N. Spofford | Bit-stock | braces | |
| 246,233 | Aug. 23, 1881 | N.N. Spofford | Ratchet bit-brace | ratchet braces | |