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| Patents for Franklin B. Norton | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 187,167 | Feb. 06, 1877 | F.B. Norton | Improvement in grinding and polishing surfaces and wheels | |
| 237,311 | Feb. 01, 1881 | F.B. Norton | Art of Preparing Emery in the Manufacture of Grinding Stones | ||