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| All Patents in class 122/460 | |||||
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| Number | Date | Patentee | Title | Type | |
| 617,785 | Jan. 17, 1899 | W.L. Teter | Apparatus for Generating and Utilizing Gaseous Fuel | gas generators | |
| 778,315 | Dec. 27, 1904 | T.D. Ulrich, E. Huber | Superheater for Traction Engines | traction engine superheaters | |