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| Patents for Jacob Hatzel Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 13,492 | Aug. 28, 1855 | G.W. Gedney | Rotary wood-splitting machine | |
 | 13,597 | Sep. 25, 1855 | H.J. Behrens | Improvement in Wrenches for Turning Screw-Nuts | |