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| All Patents in class 432/226 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 11,857 | Oct. 31, 1854 | W. Clemson | Apparatus for Tempering and Flattening Saws | |
 | 29,671 | Aug. 21, 1860 | W. Clemson | Tempering Saws | |
 | 907,116 | Dec. 22, 1908 | S.A. Baker | Can-soldering machine | |
| 2,346,923 | Apr. 18, 1944 | T.A. Waltz, A. Kullman | Apparatus for Flame Hardening Racks and the Like | ||