392 / | HD | ELECTRIC RESISTANCE HEATING DEVICES |
* | DD | HEATING DEVICES (CLASS 219 SUBCLASS 200) {11} |
465 | DF | .~ Continuous flow type fluid heater {12} |
473 | DF | .~.~ Fluid heater carried on discharge member {2} |
476 | DF | .~.~.~ Hand-held discharge member {1} |
477 | .~.~.~.~ With storage container for fluid to be heated |