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| Patents for Joel Ettinger | |||||
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| Number | Date | Patentee | Title | Type | |
| 529,113 | Nov. 13, 1894 | J. Ettinger | Rotary cutter | cutters | |
| 529,114 | Nov. 13, 1894 | J. Ettinger | Rotary cutter | cutters | |
| 529,115 | Nov. 13, 1894 | J. Ettinger | Rotary cutter | cutters | |
| 705,226 | Jul. 22, 1902 | J. Ettinger | Grinding-machine | cutter grinding machines | |