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| Patents for Oscar C. Kavle | |||||
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| Picture | Number | Date | Patentee | Title | |
| 830,480 | Sep. 04, 1906 | O.C. Kavle | Type-writing machine | ||
| 836,385 | Nov. 20, 1906 | O.C. Kavle | Finger-key for keyboard instruments | ||
| 933,181 | Sep. 07, 1909 | O.C. Kavle | Ribbon mechanism for type-writing machines | ||
| 944,734 | Dec. 28, 1909 | O.C. Kavle | Ribbon mechanism for type-writing machines | ||
| 1,698,953 | Jan. 15, 1929 | L.W. Moulton, O.C. Kavle | Gear-Finishing Machine | ||