Centralized Switching System Patents (Class 379/242)
- Including deflected electron beam switching device or mechanical or optical switching control (e.g., fluidic) (Class 379/259)
- With operator position or completion of call (e.g., dial "O", semiautomatic) (Class 379/260)
- Having shared or common switching control (Class 379/268)
- Having line finder (Class 379/293)
- With repeater (Class 379/296)
- Having specified busy-idle test (Class 379/297)
- Direct control (Class 379/298)
- With crosspoint switch detail (Class 379/306)
- With power supply (Class 379/307)