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| All Patents in class 280/7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 647,397 | Apr. 10, 1900 | R. Gascoigne | Apparatus for Leveling Boilers of Road Locomotives | traction engine boiler leveling apparatus | |
| 731,545 | Jun. 23, 1903 | N. Cernatesco | Motor Road Vehicle | internal combustion traction engines | |
| 929,662 | Aug. 03, 1909 | A. Dunbar | Logging-engine | logging trucks | |
| 989,035 | Apr. 11, 1911 | W.E. Harrison, R. Parker | Traction Engine | traction engine steering apparatus | |