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US Patent: 30,660
Clamp for holding cylinders to be polished
Patentee:
George Williamson - Newark, NJ

USPTO Classifications:
82/169

Tool Categories:
work holding

Assignees:
H. E. Richards - Newark, NJ
L. S. Goble - Newark, NJ

Manufacturer:
Not known to have been produced

Witnesses:
Charles H. Blanch
James E. McBeth

Patent Dates:
Granted: Nov. 13, 1860

Patent Pictures:
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