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| All Patents in class 33/196 | |||||
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| Number | Date | Patentee | Title | Type | |
| 36,444 | Sep. 16, 1862 | S. Barnes | Improved Miller's Stone Staff | miller | |
| 38,472 | May 12, 1863 | D. Drawbaugh | Improved machine for leveling the faces of millstones | ||