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US Patent: 269,719
Drafting-Instrument
Stairbuilders' Layout Devices
Patentee:
Henry C. Root (exact or similar names) - San Francisco, CA

USPTO Classifications:
33/415

Tool Categories:
trade specific : carpenter

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
N. P. Langland
H. Vandenbergh
Patent Dates:
Applied: Jan. 23, 1882
Granted: Dec. 26, 1882

Patent Pictures: [ 1 | 2 ]
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