| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for John B. Armstrong | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| CA-10,883 | Jan. 26, 1880 | A.R. Woodyatt | Improvements in bending and shaping machines | ||
| CA-20,406 | Oct. 22, 1884 | A.R. Woodyatt | Tilt hammer | trip and helve hammers | |