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| Patents for John G. Ernst | |||||
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| Number | Date | Patentee | Title | Type | |
| 14,188 | Feb. 05, 1856 | J.G. Ernst | Saw-set | saw sharpening machines | |
| 14,636 | Apr. 08, 1856 | E.J. Updegraff | Machine for bending wood | wood bending machines | |
| 24,971 | Aug. 02, 1859 | J.G. Ernst | Machine for bending plow-handles | wood bending machines | |