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| All Patents in class 164/23 | |||||
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| Number | Date | Patentee | Title | Type | |
| 29,738 | Aug. 21, 1860 | L. Whitman, E. Whitman | Improvement in casting cylinders for thrashing-machines | threshers and thrashers | |
| 2,702,418 | Feb. 22, 1955 | H.W. Miner | Method and Apparatus for Making Cores | foundry casting apparatus | |