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| Patents for Ernst Wolff | |||||
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| Number | Date | Patentee | Title | Type | |
| 324,554 | Aug. 18, 1885 | H. Hartig | Gas Engine | gas and gasoline engines | |
| 1,795,919 | Mar. 10, 1931 | W. Wolff, E. Wolff | Portable power hack saw | metal sawing machines | |