| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 138/175 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 78,336 | May 26, 1868 | A.P. Stephens | Improved composite pipe | ||
| 137,970 | Apr. 15, 1873 | M. Stephens | Improvement in cement-lined pipes | pipes | |