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| All Patents in class 122/461 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,102,361 | Jul. 07, 1914 | R.C. Stevens | Steam Superheater | steam superheaters | |
| 1,132,225 | Mar. 16, 1915 | R.C. Stevens | Steam Superheater | steam superheaters | |