New cases, not before in this journal. ... The present representation of Perkins's patent metallic tractors, is given through this medium with a view to satisfy the daily applications made to the patentee by his numerous correspondents.

  • Benjamin Douglas Perkins
Date:
[1802]

Licence: Public Domain Mark

Credit: New cases, not before in this journal. ... The present representation of Perkins's patent metallic tractors, is given through this medium with a view to satisfy the daily applications made to the patentee by his numerous correspondents. Source: Wellcome Collection.

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