Differenze tra le versioni di "File:Vacum-Fil-Schema.jpg"

Informazioni

<multilang> @it|Schema del caricamento a siringa rovesciata della Sheaffer. Estratto dalla prima pagina del brevetto originale (nº US-1983682 ). Ritoccato dall'autore per una maggiore nitidezza. @en|Schema of a Sheaffer pluner filler system. Excerpt from original patent (nº US-1983682 ) first page. Retouched by the author for a better sharpness. </multilang>

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