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US Patent: 72,636
Grinding and Polishing Concave Surfaces
Patentee:
William C. Hicks - New York, NY

USPTO Classifications:
451/211, 451/51

Tool Categories:
specialty machines : polishing and buffing machinery
metalworking machines : grinders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. A. Scott
A. De Lacy

Patent Dates:
Granted: Dec. 24, 1867

Patent Pictures:
USPTO pdf tiff
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