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| Patents for Elizabeth Griffith | |||||
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| Number | Date | Patentee | Title | Type | |
| 742,025 | Oct. 20, 1903 | P.V. Vernon, A. Herbert | Variable Speed Driving Mechanism | metalworking variable speed mechanisms | |
| 1,003,776 | Sep. 19, 1911 | J.A. Mumford | Steam Boiler | stationary boilers | |