| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 219/57 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 434,530 | Aug. 19, 1890 | E. Thomson | Process of and Apparatus for Forming and Welding Metals by Electricity | welding apparatus | |
| 435,283 | Aug. 26, 1890 | C.L. Coffin | Method of and Apparatus for Welding by Electricity | welding apparatus | |