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US Patent: 313,275
Dividers and Calipers
Patentee:
Charles Sumner Barber (exact or similar names) - Hartford, CT

USPTO Classifications:
33/558.09

Tool Categories:
layout tools : calipers
layout tools : compasses : dividers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Wilmot Thornton
Edwin T. Carter
Patent Dates:
Applied: Oct. 29, 1884
Granted: Mar. 03, 1885

Patent Pictures:
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