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| All Patents in class 34/76 | |||||
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| Number | Date | Patentee | Title | Type | |
| 493,606 | Mar. 14, 1893 | H. Trillrich | Coffee Roasting Apparatus | roasting coffee | |
| 509,298 | Nov. 21, 1893 | D.P. Cardozo | Apparatus for Roasting Coffee or Other Substances | coffee roasters | |