| 219 / | HD | ELECTRIC HEATING | 
| 
 | 
| 50 | DF | METAL HEATING (E.G., RESISTANCE HEATING) {19} | 
| 78.01 | DF | .~ For bonding with pressure (e.g., resistance welding) {16} | 
| 85.1 |  | .~.~ Brazing or soldering {9} | 
| 85.12 | DF | .~.~.~> Utilizing radiant energy {1} | 
| 85.14 | DF | .~.~.~> With filler metal in circuit {1} | 
| 85.16 | DF | .~.~.~> Electrically heated tool (e.g., electrodes, heaters, etc.) | 
| 85.17 | DF | .~.~.~> Furnaces or enclosures | 
| 85.18 | DF | .~.~.~> Wire lead bonders | 
| 85.19 | DF | .~.~.~> Machine for predetermined operation | 
| 85.2 | DF | .~.~.~> Fluxes or solders | 
| 85.21 | DF | .~.~.~> Solder preforms | 
| 85.22 | DF | .~.~.~> Methods |