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| All Patents in class 37/403 | |||||
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| Number | Date | Patentee | Title | Type | |
| 900,369 | Oct. 06, 1908 | E.A. Hollenbeck | Road Grader | graders and dozers | |
| 2,648,358 | Aug. 11, 1953 | F.A. Lower | Machine for clearing undergrowth from land | tree felling machines | |