old lamps from radio electronics calculating devices and lighting |
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| navigate by keyword : element analog group components engineer technological design equipment radio valve style object industry electron device tubes light industrial transistor triode amp amplifier vintage tube component history lamp electrical retro television old audio electronic vacuum technology power engineering antique cathode diode background glowing revival electricity anode electric bulb glass communication |
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| Old lamps from radio electronics. Lamps from calculating devices and lighting |
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