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US Patent: 341,165
Convertable Drill Press or Slotting Machine
Patentee: Laurence H. Pierson (exact or similar names) - San Francisco, CA USPTO Classifications: 29/26R, 409/334 Tool Categories: metalworking machines : drilling and boring : drill presses metalworking machines : metal slotting machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 23, 1885 Granted: May 04, 1886 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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