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US Patent: 489,006
Spindle Chuck
Patentee: Jason R. Hopkins (exact or similar names) - Washington, DC USPTO Classifications: 279/14 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: Jason R. Hopkins - Washington, DC George S. Prindle - Washington, DC Philip G. Russell - Washington, DC Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 10, 1890 Granted: Jan. 03, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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