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| Patents for Clarence Eich | |||||
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| Number | Date | Patentee | Title | Type | |
| 763,770 | Jun. 28, 1904 | W.F. Groene, R.K. Le Blond | Feed and Speed Changing Device for Machine-Tools | metal lathe mechanisms | |
| 763,912 | Jun. 28, 1904 | R.K. Blond, W.F. Groene | Feed and Speed Changing Device for Machine Tools | metal lathes | |
| 801,253 | Oct. 10, 1905 | W.R. Groene, R.K. Le Blond | Turret Lathe | turret lathes | |