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| Patents for Emanuel Kopriwa | |||||
| Number | Date | Patentee | Title | Type | |
| 957,716 | May 10, 1910 | D.B. Salstrom | Carving-machine | carving machines | |
| 957,717 | May 10, 1910 | D.B. Salstrom | Carving-machine | carving machines | |
| 1,013,618 | Jan. 02, 1912 | D.B. Salstrom | Carving-machine | carving machines | |
| 1,013,847 | Jan. 02, 1912 | D.B. Salstrom | Spindle-bearing | carving machines | |