| All Patents in class 137/494 |
Patents 1 -
11
of 11
      |
| Number | Title | Classification(s) |
| 113,517 | Safety Valve | 137/494, 137/514.5, 137/628, 251/338 |
| 1,087,906 | Relief-valve | 137/494, 251/50 |
| 1,702,550 | Hydraulic Reducing Valve | 137/494, 137/538, 137/625.3, 251/359, 92/133 |
| 1,806,301 | Pressure controlled valve | 137/102, 137/494, 137/516.25 |
| 2,027,706 | Counterbalance valve | 137/494, 408/235, 91/216R, 91/428, 91/445, 91/447 |
| 2,143,229 | Control Device | 137/115.13, 137/494, 210/137, 210/422, 210/452, 417/279, 417/311 |
| 2,218,930 | Automatic draft control | 137/494, 137/506, 236/45 |
| 2,224,377 | Refrigerating Apparatus | 137/340, 137/375, 137/382, 137/494, 137/561R, 137/599.01, 137/881, 251/57, 62/212, 62/225, 62/511 |
| 2,432,859 | Refrigerant Flow Controlling Means | 137/110, 137/262, 137/375, 137/487.5, 137/494, 137/561R, 137/599.07, 137/601.14, 137/870, 62/225, 62/504 |
| 2,520,386 | Refrigeration Expansion Valve | 137/468, 137/494, 236/92B, 251/294, 251/61.4, 251/85, 62/225, 92/101, 92/103M, 92/95 |
| 2,606,571 | Multipurpose control valve | 137/106, 137/115.23, 137/270, 137/494, 137/505.22, 251/63 |
