McVitie Weston valve collection
- Made:
- 1924 in United States and Canada
- maker:
- Bower Electric Limited
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LicenseThorpe 4-electrode valve, Unidyne type K.4
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Thorpe 4-electrode valve, Unidyne type K.4., 5-pin base, pinch moulded 11, (RMW/G15B - McVitie Weston number), by Bower Electric Ltd., 1924.
