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| All Patents in class 122/479.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,266,148 | May 14, 1918 | G.E. Otis | Cam for Square Hole Drills | ||
| 1,266,177 | May 14, 1918 | O. Tromlitz | Surface Gage | surface gauges | |
| 2,287,433 | Jun. 23, 1942 | E. Klafstad | System for Safeguarding the Operation of Steam Boilers | steam safety valves | |