PS

METAL COMPARTMENTALIZED ACCESSORY TRAY FOR STORING MECHANICAL OR ELECTRICAL PARTS OR THE LIKE

TELEPHONE TRUNK TRANSITION SWITCHING SYSTEMS AND APPARATUS, MULTIPOSITION CHANNEL INTERCOMMUNICATION SWITCHING APPARATUS FOR TALKING AND TESTING, AND ELECTRO-MECHANICAL CONNECTORS

PORTABLE SOLDERING WORK STATIONS; PORTABLE SUPPORT PLATFORMS FOR ELECTRICAL WIRING APPLICATIONS AND ELECTRICAL AND MECHANICAL COMPONENT INSTALLATION AND REPAIR, AND WIRE-SPOOLHOLDERS AND WIRE DISPENSERS

LINE VERIFICATION TESTING DEVICES FOR AUTOMATICALLY DIALING AND PERFORMING ELECTRICAL CONTINUITY AND VERIFICATION TESTS, OUTGOING TELEPHONE TRUNK EXTENSION TEST APPARATUS, ELECTRICAL BRUSH TEST DETECTING APPARATUS, AND ELECTRONIC COMPUTER PROGRAM ERROR TRAP CIRCUIT