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US Patent: 85,819
Improvement in grindstone-journal boxes
Patentee: James L. Haven (exact or similar names) - Cincinnati, OH USPTO Classifications: 384/549, 451/342, 451/451 Tool Categories: metalworking machines : grinders : sharpening machines : bench or pedestal grinders industrial machines : industrial machine mechanisms : industrial machine bearings Assignees: None Manufacturer: Not known to have been produced Witnesses: George H. Knight James H. Layman	Patent Dates: Granted: Jan. 12, 1869 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for James L. Haven & Co.

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