| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Thomas Spackman | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 649,357 | May 08, 1900 | W.H. Ridgway | Hoisting apparatus | hoists, winches, come-alongs | |
| 833,632 | Oct. 16, 1906 | W.H. Ridgway | Steam hydraulic hoist | hoists, winches, come-alongs | |