(Based on Use in Commerce) THERMOSTATS, THERMOSWITCHES, THERMOSTATIC CARTRIDGES, NAMELY, SPECIALLY DESIGNED CASES FOR HOLDING THERMOSTATS, ELECTROTHERMAL ACTUATORS, THERMOSTATIC ELEMENTS, NAMELY, FLAT DIAPHRAGM AND SQUEEZE-PUSH ELEMENTS FOR TRANSFORMING HEAT INTO MECHANICAL ENERGY AS WAX INSIDE THE ELEMENT EXPANDS