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Patents for St. Johnsbury Tool Co.
Patents 1 - 4 of 4
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
104,206Jun. 14, 1870I.J. RobinsonThe Diamond Bevel
125,617Apr. 09, 1872H. Fairbanks, I.J. RobinsonImprovement in Carpenters' Adjustable Bevels
153,115Jul. 14, 1874I.J. RobinsonImprovement in processes for tempering the blades of squares
RE8,058Jan. 29, 1878I.J. RobinsonThe Diamond Bevel
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