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| All Patents in class 251/107 | |||||
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| Number | Date | Patentee | Title | Type | |
| 495,720 | Apr. 18, 1893 | E.M. Birdsall | Hose Reel | hose reels | |
| 2,626,632 | Jan. 27, 1953 | O.M. Hillman | Automatic shutoff valve | ||
| 2,671,294 | Mar. 09, 1954 | E.S. Cornell | Hydraulically Driven Machine Tool | surface grinders | |