Inventions: a rat-trap (top) a bellows (centre) and an electrical capacitor [?] (below). Engraving.

    Reference:
    47536i
    Catalogue details

    Licence: Public Domain Mark

    Credit: Inventions: a rat-trap (top) a bellows (centre) and an electrical capacitor [?] (below). Engraving. Wellcome Collection. Source: Wellcome Collection.

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