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| Patents for Isabel R. Richards | |||||
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| Number | Date | Patentee | Title | Type | |
| 980,053 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine | sanding machines | |
| 980,054 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Abrasive machine | sanding machines | |