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US Patent: 1,395,353
Universal Tapping Machine
Patentee:
William C. Osterholm - Chicago, Cook County, IL

USPTO Classifications:
269/158, 408/109, 409/219, 409/241, 470/96

Tool Categories:
metalworking machines : drilling and boring : tapping machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 26, 1918
Granted: Nov. 01, 1921

Patent Pictures:
USPTO pdf tiff
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