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US Patent: 412,926
Adjustable Cone Center for Lathes
Patentee: John Knight (exact or similar names) - San Francisco, San Francisco County, CA USPTO Classifications: 82/150 Tool Categories: metalworking machines : metal lathes : metal lathe accessories and attachments Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 07, 1889 Granted: Oct. 15, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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