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US Patent: 91,635
Improvement in grooving-machine
Patentee: Thomas Holt (exact or similar names) - Brooklyn, NY USPTO Classifications: 144/133.1, 144/149 Tool Categories: woodworking machines : joint making machines : dado machines Assignees: Abram T. Merwin - Brooklyn, NY Manufacturer: Not known to have been produced Witnesses: Alexander F. Roberts Frank Blockley	Patent Dates: Granted: Jun. 22, 1869 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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