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| Patents for J. W. Jenkinson | |||||
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| Number | Date | Patentee | Title | Type | |
| 426,992 | Apr. 29, 1890 | M.M. Garver | Electrical Measuring Instrument | electrical measuring apparatus | |
| 427,022 | Apr. 29, 1890 | E. Weston | Electrical Measuring Instrument | electrical measuring apparatus | |