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| Patents for J. M. F. Howard | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 63,770 | Apr. 09, 1867 | D.M. Weston | Improvement in centrifugal machines for draining sugar and other substances | |
 | 82,049 | Sep. 08, 1868 | D.M. Weston | Improved self-balancing centrifugal machine | |