Silvanus P. Thompson's 'valve' telephone, 1882-85.
- Made:
- 1882-1885
This image is released under a CC BY-NC-SA 4.0
Licence
Example of Professor S. P. Thompson's valve telephone
Science Museum Group
Example of Professor S. P. Thompson's valve telephone
Details
- Category:
- Telecommunications
- Object Number:
- 1923-437
- type:
- telephones and valve telephones
- credit:
- Bailiff of the States of Jersey
