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| All Patents in class 137/322 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,753,884 | Jul. 10, 1956 | G.W. Lindsay | Fuel filling adapter | locomotive diesel fuel apparatus | |
| 2,957,504 | Oct. 25, 1960 | L.A. Botkin | Seal arrangement for nozzle and fitting | ||