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| All Patents in class 400/709.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 830,480 | Sep. 04, 1906 | O.C. Kavle | Type-writing machine | typewriters | |
| 843,830 | Feb. 12, 1907 | E.G. Latta | Ribbon mechanism for type-writing machines | typewriters | |
| 843,831 | Feb. 12, 1907 | E.G. Latta | Type-writing machine | typewriters | |