| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 251/282 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,772,406 | Aug. 05, 1930 | L.E. Whiton | Valve | steam valves | |
| 2,020,773 | Nov. 12, 1935 | H. Ernst | Deflection Variator | metalworking machine mechanisms | |
| 2,083,774 | Jun. 15, 1937 | J.C. Campbell | Sensitive Valve Mechanism | hydraulic apparatus | |