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US Patent: 282,049
Grinding Machine
Patentee: Andrew Campbell (exact or similar names) - Brooklyn, Kings County, NY USPTO Classifications: 451/160, 451/287, 451/365 Tool Categories: stoneworking : stone dressing machines Assignees: John McLoughlin - New York, NY Edmund McLoughlin - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 30, 1883 Granted: Jul. 31, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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