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US Patent: 18,327
Manufacture of Metallic Squares
Patentee:
Samuel Darling - Bangor, ME

USPTO Classifications:
148/528, 76/101.1

Tool Categories:
layout tools : squares : try squares

Assignees:
None

Manufacturer:
B & D - Bangor, ME

Witnesses:
Thos. H. Upperman
E. Cohen

Patent Dates:
Granted: Oct. 06, 1857

Reissue Information:
Reissued as RE2,869 (Feb. 18, 1868)

Patent Pictures: [ 1 | 2 ]
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Description:
The blade and the beam are soldered together. Known example is marked "B & D / BANGOR Me" and "Pat. Oct. 6 1857" it is assumed B & D stands for Bailey and Darling. Patent was reissued as RE2869. Samuel Darling also claims to "...believe myself to be the first inventor or discoverer of a toungue for squares, which is hardened at the edges and soft in the center, as above described, and although I have not specifically claimed it, yet I intend to do so in due time."

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