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| All Patents in class 307/151 | |||||
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| Number | Date | Patentee | Title | Type | |
| 366,523 | Jul. 12, 1887 | W. Stanley, Jr. | Automatic regulator for electric distribution | ||
| 2,102,481 | Dec. 14, 1937 | C.W. Noe | Dynamo motor | welding machines | |