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| Patents for Mabel Ray | |||||
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| Number | Date | Patentee | Title | Type | |
| 411,476 | Sep. 24, 1889 | B.F. Sturtevant | Radiator | steam heating | |
| 417,829 | Dec. 24, 1889 | J.B. Lowell | Wrench | ratchet wrenches | |