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History of the manufacturer  

Grandjean, Ch.; La Chaux-de-Fonds

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Name: Grandjean, Ch.; La Chaux-de-Fonds    (CH)  
Abbreviation: grandjean
Products: Model types

Ch. Grandjean
La Chaux-de-Fonds


This manufacturer was suggested by Marcel Bruchez.

Some models:
Country Year Name 1st Tube Notes
CH  33 Récepteur type amércain