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| All Patents in class 137/285 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,870X | Dec. 16, 1833 | J. Stroop | Hydrant | hydrants | |
| 166,195 | Aug. 03, 1875 | J.W. Douglas | Improvement in water-hydrants | hydrants | |