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US Patent: 100,772
Centerer
Patentee: Daniel Kelly (exact or similar names) - Philadelphia, PA USPTO Classifications: 408/112, 408/84 Tool Categories: metalworking machines : drilling and boring : drill bits Assignees: Daniel Kelly - Philadelphia, PA Walter K. Ludwig - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Walter K. Ludwig Theodore F. Conover John F. Brooks Edgar Tate	Patent Dates: Granted: Mar. 15, 1870 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Munn & Co.- patent attorneys

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