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| All Patents in class 431/264 | |||||
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| Picture | Number | Date | Patentee | Title | |
| AI318 | Mar. 12, 1861 | S.B. Vance | Electrical gas lighting | ||
| 2,500,787 | Mar. 14, 1950 | W. Lelgemann | Fluid Fuel Burner Apparatus for Effecting Diffusion Combustion | ||