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Category:Brazilian patent 3279

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<nowiki>Patente brasileira n.3279; Patente brasileira 3279; Patente de 1901; Aparelho destinado à transmissão phonética à distância, com fio, sem fio, através do espaço, da terra e do elemento aquoso</nowiki>
Q131607956 
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  • 9 March 1901
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Media in category "Brazilian patent 3279"

The following 7 files are in this category, out of 7 total.