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.
- Perkins, Benjamin Douglas, 1774-1810.
- 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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