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US Patent: 226,723
Clinometer
Patentee:
Frank C. Davidson (exact or similar names) - Mahomet, Champaign County, IL

USPTO Classifications:
33/388, 33/534

Tool Categories:
layout tools : levels : clinometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 16, 1880
Granted: Apr. 20, 1880

Patent Pictures:
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