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| All Patents in class 137/881 | |||||
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| Number | Date | Patentee | Title | Type | |
| 320,354 | Jun. 16, 1885 | C.B. Hodges, E. McCoy | Steam-Dome for Locomotives | locomotive boilers | |
| 2,224,377 | Dec. 10, 1940 | G.H. Clark | Refrigerating Apparatus | refrigeration apparatus | |