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US Patent: 35,159
Improvement in Joiners' Squares
Framing Square
Patentee:
John Iseman - Rosston, PA

USPTO Classifications:
33/420

Tool Categories:
layout tools : squares

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. P. Buckley
J. W. Reed
John Shoop
Geo. Bovard

Patent Dates:
Granted: May 06, 1862

Patent Pictures:
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Description:
This is yet another framing square patent that uses a second sliding arm to allow it to mark off specific angles for rafters and stairs. It is very similar to the Shanklin (11,841 - 10/24/1854) and Whipple (14,329 - 2/23/1856) patents.

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