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| All Patents in class 152/306 | |||||
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| Number | Date | Patentee | Title | Type | |
| 124,186 | Feb. 27, 1872 | D.D. Williamson | Implement in Wheels for Traction Engines | traction engine wheels | |
| 343,621 | Jun. 15, 1886 | W. Baker | Polishing Wheel | polishing and deburring wheels | |