Télégraphie et téléphonie sans fil
Inventory list
Identifier
|
Title | Level of description | Date | Digital object | |
|---|---|---|---|---|---|
| R1139/14/29182/28231 | International Radiotelegraphic Conference - Appointment of a British expert. | File | 1923-1926 | ||
| R1139/14/33040/28231 | Wireless Telegraphy - Correspondence with the National Association of Radio Manufacturers. | File | 1923-1924 | ||
| R1139/14/34267/28231 | Wireless Telegraphy - Arrangements for a Conference - Preliminary correspondence. | File | 1924-1925 | ||
| R1139/14/41433/28231 | International Exhibition of Wireless Telegraphs and Telephones Geneva 1925. | File | 1925 | ||
| R1139/14/43391/28231/Jacket1 | Cordless telephony - Collaboration with the International Office of Radiophony. | File | 1925 |