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Keyphone demonstration exhibit, featuring both multifrequency and Strowger - pulse signalling, 1976
- Made:
- 1976
Keyphone demonstration exhibit, featuring both multifrequency and Strowger - pulse signalling, 1976
Details
- Category:
- Telecommunications
- Object Number:
- 1979-764
- type:
- exhibit
- credit:
- Plessey Telecommunications Ltd.