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US Patent: 158,835
Improvement in Mortising-Tools Lock-Mortise Chisel
Patentee: Gustave Erlin (exact or similar names) - San Francisco, CA USPTO Classifications: 30/167.1, 7/144 Tool Categories: woodworking tools : chisels : mortise chisels Assignees: None Manufacturer: Not known to have been produced Witnesses: Jno. L. Boone C. M. Richardson	Patent Dates: Applied: Dec. 10, 1874 Granted: Jan. 19, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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