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US Patent: 821,473
Automatic chain-feed drilling attachment
Patentee: Joseph S. Dikeman (exact or similar names) - Torrington, CT USPTO Classifications: 74/841 Tool Categories: metalworking tools : drilling : chain drills Assignees: None Manufacturer: Not known to have been produced Witnesses: Bernard E. Higgins W. H. Morrison	Patent Dates: Applied: Sep. 09, 1905 Granted: May 22, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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