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US Patent: 74,297
Improvement in Pattern-Square
Patentee:
Nelson W. Burnett - South Hadley, MA

USPTO Classifications:
33/415

Tool Categories:
layout tools : squares : carpenter squares
trade specific : carpenter

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. F. Hyde
E. H. Hyde

Patent Dates:
Granted: Feb. 11, 1868

Patent Pictures:
USPTO pdf tiff
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Description:
Primarily intended for laying out mortises in timber-frame construction.

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