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| Patents for Allman & Thompson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 411,211 | Sep. 17, 1889 | I.F. Allman | Ignitor for Gas Engines | |
 | 453,071 | May 26, 1891 | I.F. Allman | Gas Engine | |
 | 556,237 | Mar. 10, 1896 | I.F. Allman | Vapor Engine | |
 | 563,541 | Jul. 07, 1896 | I.F. Allman | Vaporizer for Oil Engines | |