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| All Patents in class 283/74 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 763,912 | Jun. 28, 1904 | R.K. Blond, W.F. Groene | Feed and Speed Changing Device for Machine Tools | |
 | 1,407,085 | Feb. 21, 1922 | H.V. Rau | Marking button | |
| 3,052,999 | Sep. 11, 1962 | C.B. Sipek, R.K. Sedgwick | Identifying Means for Tools | ||
| 3,251,150 | May 17, 1966 | C.B. Sipek, R.K. Sedgwick | Identifying Means for Tools | ||