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US Patent: 8,019
Improvement in Machines for Cutting Screws on Bedstead-Rails
Patentees:
H. Gross (exact or similar names) - Tiffin, OH
William Campbell (exact or similar names) - Tiffin, OH

USPTO Classifications:
235/29R, 235/41, 408/37

Tool Categories:
woodworking machines : specialty woodworking machines : wood threading machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Uriah Creeger
G. I. Keen
Patent Dates:
Granted: Apr. 01, 1851

Patent Pictures:
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