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US Patent: 85,430
Combined Beam Compass & Calipers
Patentee:
William Burrows (exact or similar names) - New York, NY

USPTO Classifications:
33/501.3

Tool Categories:
layout tools : compasses : trammels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. Le Clerc
A. Kinnier
Patent Dates:
Granted: Dec. 29, 1868

Patent Pictures:
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