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History of the manufacturer  

Haardt & Co. AG; Düsseldorf

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Name: Haardt & Co. AG; Düsseldorf    (D)  
Abbreviation: haardt
History:
Haardt & Co. AG; Düsseldorf: [638330 Schaltbild]


Some models:
Country Year Name 1st Tube Notes
30 K33 RE034   

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