| 439 / | HD | ELECTRICAL CONNECTORS | 
| 387 | DF | CONTACT COMPRISING CUTTER (SEVERING, PIERCING, ABRADING, SCRAPING, BREAKING OR TEARING) {10} | 
| 389 | DF | .~ Insulation cutter {3} | 
| 391 | DF | .~.~ Conductor sheath piercing {11} | 
| 418 | ![]()  | .~.~.~ Contact member cutting to contact first conductor and contacting second conductor {1} | 
| 419 | DF | .~.~.~.~> Lamp or electron tube socket or base |