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| All Patents in class 336/59 | |||||
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| Number | Date | Patentee | Title | Type | |
| 410,468 | Sep. 03, 1889 | E. Rice, Jr., E. Thomson | Reactive and Induction Coil | magnetic coils | |
| 628,957 | Jul. 18, 1899 | J.W. Packard | Electric transformer | electrical devices | |