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| Patents for William H. Severson | |||||
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| Number | Date | Patentee | Title | Type | |
| 182,723 | Sep. 26, 1876 | W.H. Severson, H. Tyler | Improvement in hose-couplings | fire hoses | |
| 182,724 | Sep. 26, 1876 | W.H. Severson, H. Tyler | Improvement in tube-expanders | pipe and tube expanders | |
| 365,448 | Jun. 28, 1887 | W.H. Severson | Hose-cart | steam fire engines | |