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| All Patents in class 266/259 | |||||
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| Number | Date | Patentee | Title | Type | |
| 150,289 | Apr. 28, 1874 | W. Clemson | Improvement in apparatus for tempering saws | making sawblades | |
| 1,906,092 | Apr. 25, 1933 | G.S. Peterson | Conveyer furnace | ||