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US Patent: 73,290
Improvement in instruments for drawing ellipses
Patentee:
Franklin Bowly (exact or similar names) - Winchester, VA

USPTO Classifications:
33/30.1

Tool Categories:
layout tools : special purpose gauges

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Wm. F. McNamara
Alex. F. Roberts
Patent Dates:
Granted: Jan. 14, 1868

Patent Pictures: [ 1 | 2 ]
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Description:
One of these appeared in a Martin J. Donnelly auction. Martin's description says it was fashioned from brass and Brazilian Rosewood.

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