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| All Patents in class 239/90 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,811,596 | Jun. 23, 1931 | C.D. Salisbury | Injection Valve Means for Hydrocarbon Motors | fuel systems | |
| 1,836,188 | Dec. 15, 1931 | C.D. Salisbury | Injection Valve Means for Hydrocarbon Motors | fuel injection apparatus | |