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History of the manufacturer  

National Dobro Co.; San Louis

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Name: National Dobro Co.; San Louis    (USA)  
Abbreviation: nat-dobro
Products: Model types Others
Summary:

National Dobro Co.; San Louis, Ca.

Founded: 1927
Production: 1927 -
History:
In 1927 the National String Instrument Corporation was formed by John Dopyera, the luthier who had invented the resonator guitar, and George Beauchamp, the steel guitar player who had suggested to Dopyera the need for a louder guitar able to play a melody that would be heard among brass and other wind instruments. In 1928, Dopyera left National, and together with four of his brothers formed the Dobro Manufacturing Company to produce a competing single resonator design, with the resonator cone inverted. John Dopyera continued to hold stock in National. In 1932, the Dopyera brothers secured a controlling interest in both National and Dobro, and merged the companies to form the National Dobro Corporation. Until today National continued to build Guitars and amplifiers.

This manufacturer was suggested by Hannes Gerber.


Some models:
Country Year Name 1st Tube Notes
USA  39 Model 60 6SJ7  Musicial Instrument Amplifier. 
USA  43 Model 75 6J7  Musical Instrument Amplifier. 
USA  39 Modell 100 6SJ7  Musical Instrument Amplifier. 
USA  39 Model C 6N7  Musicial Instrument Amplifier. 
USA  36 36-6   Musical Instrument Amplifier 
USA  40 Model 50 6J7  Musical Instrument Amplifier 
USA  38 Model B 6N7  Musical Instrument Amplifier. 
USA  38 Supro 21 6J7  Musical instrument amplifier with lapsteel guitar in case. 
USA  37 D 6N7  Musical Instrument Amplifier. 
USA  38 13A-15 6N7  Musical Instrument Amplifier. 
USA  39 21 6J7  Musical Instrument Amplifier. 
USA  39 31 1G6G  Musical Instrument Amplifier. 

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