| 439 / | HD | ELECTRICAL CONNECTORS |
| 527 | DF | WITH SUPPORTING MEANS FOR COUPLING PART {18} |
| 540.1 | ![]() | .~ Supporting plural, independent coupling parts {2} |
| 541 | DF | .~.~> Plural lamp or electron tube sockets |
| 541.5 | DF | .~.~> Stacked right-angle connector for use on printed circuit board (i.e., PCB) |