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US Patent: 163,257
Rock Drill Chucks
Patentees: George H. Reynolds (exact or similar names) - New York, NY Walter Tefft (exact or similar names) - Mineville, Essex County, NY USPTO Classifications: 279/55 Tool Categories: stoneworking : stone boring and drilling machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 03, 1875 Granted: May 11, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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