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US Patent: 631,572
Reaming Attachment for Bits Countersink Attachment
Patentee: Louis Judson (exact or similar names) - Chicago, IL USPTO Classifications: 408/202, 408/211, 408/212, 408/213, 408/223, 408/225 Tool Categories: woodworking tools : hand drills : drill bits : countersinks Assignees: None Manufacturer: Not known to have been produced Witnesses: Louise Serage Allan A. Murray	Patent Dates: Applied: Mar. 20, 1899 Granted: Aug. 22, 1899 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)
Description: Self-limiting countersink attachment.

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