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US Patent: 69,418
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Patentee:
D. F. Elmer (exact or similar names) - Springfield, Hampden County, MA

USPTO Classifications:
269/244, 269/307, 33/813

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John M. Stebbins
Sidney Sanders
Patent Dates:
Granted: Oct. 01, 1867

Patent Pictures:
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