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Concetto:Patented in 1893 (visualizza wikitesto)

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~~{#concept: [[Category:Patents]] [[Patent date::≥1/1/1893]][[Patent date::≤31/12/1893]]~~

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~~| Patents registered in 1893~~

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#concept: [[Category:Patents]] [[Patent date::≥1/1/1893]][[Patent date::≤31/12/1893]]

| Patents registered in 1893

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