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US Patent: 1,506,034
Boring Tool Holder
Patentee:
Ludwig Swanson (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:
279/6, 82/158

Tool Categories:
metalworking machines : drilling and boring : drilling and boring tool holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Aug. 19, 1920
Granted: Aug. 26, 1924

Patent Pictures:
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