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| All Patents in class 137/213 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 6,021X | Jun. 08, 1830 | T. Ewbank | Preventing explosion of steam boilers by detector | ||
| 9,125X | Sep. 26, 1835 | T. Odiorne | Management of steam in regulating height of water in boilers | ||
| AI71 | Nov. 26, 1844 | W. Duff | Steam boiler safety valve | ||
| 79,708 | Jul. 07, 1868 | C.S. Watson | Steam Boiler Indicator | ||