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US Patent: 6,441X
Improved mode of manufacturing wood-screws
Patentee:
Hazard Knowles (exact or similar names) - Colchester, CT

USPTO Classifications:
72/88

Tool Categories:
metalworking machines : screw machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Dillon Williams
Amherst D. Scovill
Patent Dates:
Granted: Apr. 01, 1831

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Hazard Knowles

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