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US Patent: 1,800,181
Stump-grooving machine
Patentee: John M. Herider (exact or similar names) - Indianapolis, IN USPTO Classifications: 144/134.1, 144/136.7, 144/2.1, 144/24.12 Tool Categories: woodworking machines : specialty woodworking machines : veneer machines Assignees: Sinker-Davis Co. - Indianapolis, IN Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 05, 1929 Granted: Apr. 07, 1931 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Sinker-Davis Co.

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