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| Patents for George Frost & Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 304,371 | Sep. 02, 1884 | E.S. Stimpson | Pencil-sharpener | pencil sharpeners | |
| 334,803 | Jan. 26, 1886 | G.H. Phelps | Pencil-sharpener | pencil sharpeners | |