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| All Patents in class 314/99 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 334,023 | Jan. 12, 1886 | J.A. Jenney | Arc-lamp regulator | |
 | 663,454 | Dec. 11, 1900 | F.W. Martin, F. Stewart | Electric-arc lamp | |