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US Patent: 564,700
Open Die Head
Patentee:
Hermann Kupsch (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
408/142, 408/178, 408/74, 470/75

Tool Categories:
metalworking tools : tap and die holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jul. 05, 1894
Granted: Jul. 28, 1896

Patent Pictures:
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