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US Patent: 1,615,745
Square
Patentee:
Edwin W. Delph - New Orleans, LA

USPTO Classifications:
33/33

Tool Categories:
layout tools : squares

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 07, 1925
Granted: Jan. 25, 1927

Patent Pictures:
USPTO pdf tiff
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Description:
This square features two rows of teeth built into the spine of the blade. Actuating a lever in the square stock moves these teeth, thus marking the stuff and obviating the need for a pencil.

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