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US Patent: 164,032
Chucks for Metal Drills
Patentee:
George M. Pratt (exact or similar names) - Middletown, Middlesex County, CT

USPTO Classifications:
279/120

Tool Categories:
metalworking machines : drilling and boring : drill presses : drill press chucks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 29, 1875
Granted: Jun. 01, 1875

Reissue Information:
Reissued as RE8,793 (Jul. 08, 1879)

Patent Pictures:
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