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US Patent: 137,861
Improvement in cutters for tonguing and grooving lumber
Patentee: Daniel Perrin (exact or similar names) - McGregor, IA USPTO Classifications: 144/241 Tool Categories: woodworking machines : machine and tool cutters : cutterheads Assignees: None Manufacturer: Not known to have been produced Witnesses: A. Burlingame H. W. Burlingame	Patent Dates: Applied: Dec. 14, 1872 Granted: Apr. 15, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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