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| All Patents in class 454/64 | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 587,370 | Aug. 03, 1897 | H.N. Middleton | Exhauster-hood | |
| 619,297 | Feb. 14, 1899 | D.B. Fraser | Apparatus for Cooling Roasted Coffee | ||