Armstrong return

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Edwin Howard Armstrong

New York 18.December.1890   New York 01.February.1954

   

DOCUMENTS
 
     
1914 Patent    1.113.149     Oct, 6, 1914 Wireless receiving system


 
1921

June 23, 1921 Congratulations on winning the first case on the super reaction, by Dr.  A. A. Fleming FlemingJ. J.
   
1922

News of the report on super reaction of acts of the IRE (The Institute of Radio Engineers) Issued in August 1922   
     
1933
Patend system FM
   
1934
Images of experimental apparatus  Armstrong's