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US Patent: 13,169
Machine for cutting cavities spherical, ellipsoidal, &c.
Patentee:
Isaac B. Hartwell (exact or similar names) - Woodstock, VT

USPTO Classifications:
144/134.1, 144/33, 280/124.113

Tool Categories:
woodworking machines : wood lathes

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
L. A. Marsh
Norman Williams
Patent Dates:
Granted: Jul. 03, 1855

Patent Pictures:
USPTO (New site tip)
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