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| All Patents in class 72/223 | |||||
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| Number | Date | Patentee | Title | Type | |
| 263,519 | Aug. 29, 1882 | S.A. Hewitt | Shaping and Welding Rolls | ||
| 373,613 | Nov. 22, 1887 | F. Schreidt | Machine for Rolling Tops of Carriage Irons | ||