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US Patent: 1,866,794
Lawn mower sharpening machine
Patentee: Frank H. Bierman (exact or similar names) - Minneapolis, MN USPTO Classifications: 451/114, 56/250 Tool Categories: metalworking machines : grinders : sharpening machines household : lawn mowers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 18, 1931 Granted: Jul. 12, 1932 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: Improvements to patent 1,444,100.

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