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| All Patents in class 200/195 | |||||
| Picture | Number | Date | Patentee | Title | |
| 609,246 | Aug. 16, 1898 | N. Tesla | Electric-Circuit Controller | ||
| 609,248 | Aug. 16, 1898 | N. Tesla | Electric-Circuit Controller | ||
| 609,249 | Aug. 16, 1898 | N. Tesla | Electric-Circuit Controller | ||