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US Patent: 469,503
Boring Tool
Patentee: John T. Kiehner (exact or similar names) - Philadelphia, PA USPTO Classifications: 408/129 Tool Categories: metalworking machines : drilling and boring : portable metal drilling machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 07, 1891 Granted: Feb. 23, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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