Barwick Wrench Company

Barwick Wrench Company (Boston, MA) - ca. 1872 - An advertisement from 1901 notes the "Barwick Wrench" is made by Billings & Spencer.  This advertisement from 1903 notes the same but also contains a picture of the plier/wrench.  Another article on Barwick wrenches from the October, 1872 edition of The Technologist. 

William Henry Barwick Patents:

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