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US Patent: 270,951
Artificer's Level
Patentee:
John W. Harmon (exact or similar names) - Boston, MA

USPTO Classifications:
33/285

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. H. Eddy
E. B. Pratt
Patent Dates:
Applied: Jan. 21, 1882
Granted: Jan. 23, 1883

Patent Pictures: [ 1 | 2 ]
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