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US Patent: 574,721
Thread Cutting Implement
Patentee:
Charles Elterich (exact or similar names) - New York, NY

USPTO Classifications:
408/220, 408/221

Tool Categories:
metalworking tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jan. 14, 1896
Granted: Jan. 05, 1897

Patent Pictures:
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