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US Patent: 158,835
Improvement in Mortising-Tools
Lock-Mortise Chisel
Patentee:
Gustave Erlin - 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 pdf tiff
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