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| Patents for Jean Grund | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 513,261 | Jan. 23, 1894 | M. Jaeger | Vise | |
 | 1,046,809 | Dec. 10, 1912 | J. Kunz | Mechanical Hammer | |
| 1,257,561 | Feb. 26, 1918 | W. Weber | Chamering Device for Rock Drills | ||