| 337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
| 298 | DF | THERMALLY ACTUATED SWITCHES {7} |
| 306 | DF | .~ Expansible or vaporizable fluid actuated {12} |
| 329 | DF | .~.~ Contact structure or composition of material {2} |
| 330 | ![]() | .~.~.~ With relative position adjustment means |