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All Patents in class 451/216 | |||||
Number | Date | Patentee | Title | Type | |
2,457,383 | Dec. 28, 1948 | F.G. Krafft | Apparatus for grinding | grinders | |
2,730,843 | Jan. 17, 1956 | H. Ernst | Cambering Mechanism | roll grinding machines | |
5,125,186 | Jun. 30, 1992 | R.L. Schroeder | Drill Grinding Machine | drill grinders |