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| Patents for William D. Johnson | |||||
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| Number | Date | Patentee | Title | Type | |
| 203,162 | Apr. 30, 1878 | W.D. Johnson | Improvement in barrel-hoop-cutting machines | hoop making machines | |
| 315,509 | Apr. 14, 1885 | W.D. Johnson | Machine for cutting wooden vessels | specialty woodworking machines | |