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US Patent: 134,381
Work Holders for Lathes
Patentee: William P. Hopkins (exact or similar names) - Lawrence, Essex County, MA USPTO Classifications: 82/166 Tool Categories: metalworking machines : metal lathes : metal lathe accessories and attachments Assignees: None Manufacturer: Not known to have been produced Witnesses: Baldwin Coolidge George G. Adams	Patent Dates: Granted: Dec. 31, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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