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US Patent: 432,972
Bolt Threading Machine
Patentee:
Louis T. Bowman - Chicago, IL

USPTO Classifications:
408/158, 408/234, 408/66

Tool Categories:
metalworking machines : metal threading machines

Assignees:
Capitol Mfg. Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 03, 1889
Granted: Jul. 29, 1890

Patent Pictures:
USPTO pdf tiff
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