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| All Patents in class 432/32 | |||||
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| Number | Date | Patentee | Title | Type | |
| 200,520 | Feb. 19, 1878 | G.H. Downie | Coffee Roaster | coffee roasters | |
| 285,929 | Oct. 02, 1883 | J.W. Rees | Coffee Roaster | coffee roasters | |
| 346,459 | Aug. 03, 1886 | H.F. Bock | Coffee Roaster | coffee roasters | |
| 373,531 | Nov. 22, 1887 | F. Maassen | Coffee Roaster | coffee roasters | |
| 616,790 | Dec. 27, 1898 | M.F. Hamsley | Apparatus for Roasting Coffee Berries | coffee roasters | |