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US Patent: 76,505
Combined clay-grinding and separating mill
Patentees: F. B. Norton (exact or similar names) - Worcester, MA F. Hancock (exact or similar names) - Worcester, MA USPTO Classifications: 209/306, 209/406 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: George H. Miller Thomas H. Dodge	Patent Dates: Granted: Apr. 07, 1868 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Norton Co.
Description: Of interest because co-inventor Franklin B. Norton founded the company that became abrasives giant Norton Co.

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