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US Patent: 20,313
Device Attached to Handsaws for Squaring and Marking
Hiram Smith - Camden, NJ

USPTO Classifications:
30/517, 33/474, 7/150

Tool Categories:
woodworking tools : handsaws : combination saws
layout tools : squares

Henry Disston - Philadelphia, PA

Henry Disston - Philadelphia, PA

Henry Howson
Henry Odiorne

Patent Dates:
Granted: May 18, 1858

Patent Pictures: [ 1 | 2 ]
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References improvements on the Jackson Gorham patent, 14863, of 12 MAY 1856. Shoulder strips are riveted directly to the blade instead of the handle to ensure squareness is maintained. A sharp projection occurs at the beginning of the rule for reference and an awl is provided in the handle for marking.

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