D. P. Foster (Shelbourne Falls, MA) - DATAMP indicates this wrench was manufactured by D. P. Foster. However, our sources indicate the wrench was produced early on by Nathaniel Adams of Boston, and later by unknown sources. By 1864, Scientific American ran advertisements to sell the rights to the patent by D. P. Foster.
Sub Brands / Trade Names / Trademarks
- Foster's "Unyielding Grip" (Wrenches)
Dan P. Foster Patent #22,947 - Wrench