| All Patents in class 55/DIG.20 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 5,422 | Feb. 01, 1848 | J.S. Lafitte | Spark Arrester | locomotive spark arresters |
| 218,643 | Aug. 19, 1879 | M. Rumely | Spark-Arrester | traction engine spark arresters |
| 663,148 | Dec. 04, 1900 | G.F. Conner | Spark Arrester and Extinguisher | traction engine spark arresters |
| 764,658 | Jul. 12, 1904 | H.C. Clay | Spark Arresting Smoke Stack | traction engine spark arresters |
| 872,072 | Nov. 26, 1907 | F.J. Lyman | Spark Destroyer for Smoke Stacks | traction engine spark arresters |
| 880,385 | Feb. 25, 1908 | W.F. MacGregor | Spark Arrester | traction engine spark arresters |
