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old vacuum tubes
Show Format Data
Format
JPG 300 DPI
Image information
Author:
dreamstime
License:
buy for Personal Use & Commercial
File Type:
JPG
Views:
times
Comprar
1950s
air
airtight
amplifier
anode
cathode
component
current
edison
electrical
electron
electronics
equipment
history
ideas
industry
invention
lamp
pentode
radio
store
style
television
tetrode
thermoionic
transistor
triode
tube
vacuum
valve
