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| All Patents in class 29/DIG.52 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,036,102 | Aug. 20, 1912 | J. Hartness | Chip Controlling Means for Metal-Cutting Tools | ||
| 1,036,103 | Aug. 20, 1912 | J. Hartness | Chip Controller for Metal Turning Tools | ||
| 1,902,679 | Mar. 21, 1933 | M. Lizon, I.E. Toniewicz | Tool Holder Guard | ||
| 2,074,257 | Mar. 16, 1937 | M.E. Martellotti, H. Ernst | Vibrating Tool Metalworking Machine | ||
| 2,457,469 | Dec. 28, 1948 | L.A. Hillman | Chip Breaker | ||
| 5,080,535 | Jan. 14, 1992 | Y. Hirano | Drill Chips Removing Device | ||