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| All Patents in class 83/908 | |||||
| Number | Date | Patentee | Title | Type | |
| 8,129 | Jun. 03, 1851 | H.S. Cook | Comb-cutting machine | comb making machines | |
| 2,802,379 | Aug. 13, 1957 | D.J. McConnell, T.H. Zbikowski, D.B. Chenoweth | Retoothing machine | saw sharpening machines | |