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History of the manufacturer  

McMahon & ST John; South Norwalk, Connecticut

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Name: McMahon & ST John; South Norwalk, Connecticut    (USA)  
Abbreviation: mcmahon
Products: Model types
Summary:

The McMahon & ST John company was located at 56 West Avenue in South Norwalk, Connecticut.

In a January 1920 Radio Amateur News magazine advertisement the company offered a crystal receiving set.

History:
?

This manufacturer was suggested by Alan Larsen.


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