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| All Patents in class 137/294 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 80,143 | Jul. 21, 1868 | Z.E. Coffin | Improvement in hydrants | |
 | 93,658 | Aug. 10, 1869 | M. Zwiebel | Hydrant | |
 | 94,749 | Sep. 14, 1869 | B. Holly | Hydrant | |