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US Patent: 555,604
Feed Screw for Rock Drills
Patentee: William Almond Keyser (exact or similar names) - Granite Mountain, Burnet County, TX USPTO Classifications: 74/441 Tool Categories: stoneworking : stone boring and drilling machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 05, 1895 Granted: Mar. 03, 1896 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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