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| All Patents in class 432/81 | |||||
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| Number | Date | Patentee | Title | Type | |
| 115,228 | May 23, 1871 | R.L. Mills | Improvement in Coffee Roasters | coffee roasters | |
| 241,294 | May 10, 1881 | J. Burns | Coffee Roaster | coffee roasters | |
| 344,388 | Jun. 29, 1886 | J. Levy | Coffee Roaster | coffee roasters | |