| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/516.25 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 793,947 | Jul. 04, 1905 | F.A. Hannah, J.H. Millett | Steam Safety Valve | steam safety valves | |
| 833,632 | Oct. 16, 1906 | W.H. Ridgway | Steam hydraulic hoist | hoists, winches, come-alongs | |
| 1,806,301 | May 19, 1931 | J.L. Valley | Pressure controlled valve | pressure regulators | |