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| All Patents in class 474/175 | |||||
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| Number | Date | Patentee | Title | Type | |
| 39,325 | Jul. 21, 1863 | S. Perry | Improvement in horse-powers | animal powered apparatus | |
| 103,474 | May 24, 1870 | V. Knecht | Improved pulley-sheave | industrial machine pulleys and belt drive mechanisms | |