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US Patent: 134,381
Work Holders for Lathes
Patentee:
William P. Hopkins - Lawrence, MA

USPTO Classifications:
82/166

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Baldwin Coolidge
George G. Adams

Patent Dates:
Granted: Dec. 31, 1872

Patent Pictures:
USPTO pdf tiff
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