Tubes / semiconductors by category - Manufacturer
Selected: Unknown Europe
| Name | Maker | Year | User | Usage | Type | Base |  |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MaybeValora | Unknown Eu | Triode, | Europe | 1 | 3 | – | – | – | – | – | ||||
| x-ray-rectifier | Unknown Eu | 1908 ?? | Industrial | Power-sup | X-ray tu | – | 3 | – | – | – | – | – | ||
2 tubes or semiconductors found.