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| Patents for Alexander Specht | |||||
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| Number | Date | Patentee | Title | Type | |
| 403,712 | May 21, 1889 | O.A. Winter | Machine for grinding the cutters of wood-cutting machines | sharpening machines | |
| 593,093 | Nov. 02, 1897 | H.A. Guhl | Apparatus for Sharpening Pencils | pencil sharpeners | |