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US Patent: 19,786
Chuck for Making Sheet Metal Screws
Patentee:
John L. Mason (exact or similar names) - New York, NY

USPTO Classifications:
72/479, 72/482.94

Tool Categories:
metalworking machines : metal lathes : metal lathe chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Mar. 30, 1858

Patent Pictures:
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