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US Patent: 166,538
Chucks and Centerers
Patentee:
John R. Mason (exact or similar names) - Wilmington, New Castle County, DE

USPTO Classifications:
279/116, 408/106

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jun. 22, 1875
Granted: Aug. 10, 1875

Patent Pictures:
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