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History of the manufacturer  

Springer, J. AG; München

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Name: Springer, J. AG; München    (D)  
Abbreviation: springer
Products: Model types

J. Springer AG, München, Von der Tannstraße 27, Hersteller eines "Radio in der Westentasche" (Detektorempfänger RADIOCA).

Radioca, J. Springer AG; München: Info Dr.H.Börner: 1925, Detektorapparate, Eigenbau? Auch Marke «Spring-Radio».

Some models:
Country Year Name 1st Tube Notes
25–28 Radioca 500