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Descrizione
English: U.S. Patent 836,531 "Means for receiving intelligence communicated by electric waves", 1906. G. W. Pickard.
Italiano: Schema elettrico radio a galena
Data
Fonte U.S. Patent 836,531
Autore G. W. Pickard.

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attuale04:13, 11 mag 2007Miniatura della versione delle 04:13, 11 mag 2007935 × 876 (15 KB)ReddiU.S. Patent 836,531 "Means for receiving intelligence communicated by electric waves", 1906. G. W. Pickard.

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