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| All Patents in class D12/211 | |||||
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| Number | Date | Patentee | Title | Type | |
| D32,458 | Apr. 03, 1900 | G.F. Conner | Traction Wheel | traction engine wheels | |
| D33,141 | Aug. 28, 1900 | G.F. Conner | Road Roller Wheel | steam rollers | |