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| All Patents in class 188/186 | |||||
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| Number | Date | Patentee | Title | Type | |
| 301,387 | Jul. 01, 1884 | H.R. Dickerman, J.S. Oram | Fire Escape | ||
| 465,783 | Dec. 22, 1891 | W.D. Mixter, E.W. Murphy | Motor for Coffee Roasters | coffee roasters | |