Harkness
Kenneth Harkness Radio Corp., Dept. A2, 727-739 Frelinghuysen Ave., Newark, N.J.
In 1924 ontwerpt Kenneth Harkness de Counterflex schakeling.
Harkness |
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Kenneth Harkness Radio Corp., Dept. A2, 727-739 Frelinghuysen Ave., Newark, N.J. In 1924 ontwerpt Kenneth Harkness de Counterflex schakeling. |
