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US Patent: 509,039
Bolt Threader
Patentee:
Louis Kirchenbauer (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
279/122, 408/155

Tool Categories:
metalworking tools : tap and die holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 26, 1893
Granted: Nov. 21, 1893

Patent Pictures:
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