US Patent: 180,869 - Devices for Cutting Screw Threads


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US Patent: 180,869

Devices for Cutting Screw Threads

Patentees:

Eugene E. Green (exact or similar names) - Portsmouth, Scioto County, OH

John Thomson (exact or similar names) - Portsmouth, Scioto County, OH

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Pictures: