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| All Patents in class 180/211180 | |||||
| Number | Date | Patentee | Title | Type | |
| 644,610 | Mar. 06, 1900 | I.W. Knight, R. Knight | Traction Engine | traction engine steering apparatus | |
| 654,728 | Jul. 31, 1900 | H. Grams | Traction Engine | traction engine propulsion components | |