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| Patents for William Levin | |||||
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| Number | Date | Patentee | Title | Type | |
| 194,304 | Aug. 21, 1877 | W. Levin | Improvement in mortising and tenoning machines | mortising machines | |
| 206,885 | Aug. 13, 1878 | W. Levin | Manufacture of artists' canvas | ||
| 206,886 | Aug. 13, 1878 | W. Levin | Painters' canvas | ||