219 / | HD | ELECTRIC HEATING |
200 | DF | HEATING DEVICES {14} |
520 | DF | .~ With heater-unit housing, casing, or support means (e.g., frame and single sheet) {13} |
526 | DF | .~.~ With means for attaching housing or casing to an external device (e.g., magnetic or vacuum) {1} |
527 | .~.~.~ Body-supported (e.g., human body) |