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History of the manufacturer  

Research Laboratories, Inc.; Des Moines (IA)

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Name: Research Laboratories, Inc.; Des Moines (IA)    (USA)  
Abbreviation: resealabio
Products: Model types
Summary:

Research Laboratories, Inc.; Des Moines, Iowa (1920´s).
Brand or product: "Kleer-Tone"

History:

This manufacturer was suggested by Wolfgang Scheida.


Some models:
Country Year Name 1st Tube Notes
USA  24 Kleer-Tone   The famous improved Kleer-Tone; Wave trap with ~20-345 pF tuning capacitor and a 255 µH c... 

[rmxhdet-en]

Further details for this manufacturer by the members (rmfiorg):

Outside of Research Laboratories Inc. Radio Log Book. Note their Kleer Tone on top of the radio.tbn_usa_resealabio_1930_logbook_outside.jpg
Inside of the Research Laboratories Inc. Radio Log Booktbn_usa_resealabio_1930_logbook_inside.jpg

  
rmXorg