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Electronics

A McGraw-Hill Publication

Periodical   Volume 2Number 6June 1931

us_electronics_june_1931_titl.jpgus_electronics_june_1931_inh.jpg
created by: Achim Dassow (25.Nov.19) available by: Achim Dassow
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Some example tube pages for sets you can see there:

Screen-grid Tetrode 236
Vacuum Pentode 238
Vacuum Pentode 247
MULTI-SYSTEM, internal 3NF (1926)
Screen-grid Tetrode 551 (1931)

  
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