![](https://coimages.sciencemuseumgroup.org.uk/52/720/medium_thumbnail_1923_0625__0002_.jpg)
Marconi Osram Valve Company Limited
- Nationality:
- British
1919 - Marconi-Osram Valve Company formed as company owned jointly by GEC and Marconi's Wireless Telegraph Co; it took over GEC's valve factory. 1920 - name changed to M-O Valve Co.
1919 - Marconi-Osram Valve Company formed as company owned jointly by GEC and Marconi's Wireless Telegraph Co; it took over GEC's valve factory. 1920 - name changed to M-O Valve Co.