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| Patents for John W. H. Doubler | |||||
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| Number | Date | Patentee | Title | Type | |
| 59,193 | Oct. 30, 1866 | J.W. Doubler | Improved saw-filing machine | saw sharpening machines | |
| 316,341 | Apr. 21, 1885 | J.W. Doubler | Bevel | bevels | |