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US Patent: 56,013
Goniometer
Patentee:
William W. Cooper (exact or similar names) - Washington, DC

USPTO Classifications:
33/388

Tool Categories:
specialty tools : goniometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jul. 03, 1866

Patent Pictures:
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Description:
An instrument for the precise measurement of angles, especially one used to measure the angles between the faces of crystals.

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