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US Patent: 3,872
Machinery for Cutting Screws in the Posts and On the Rails of Bedsteads
Patentees: William F. Converse (exact or similar names) - Harrison, OH Richard H. Penny (exact or similar names) - Harrison, OH Richard S. Hannaford (exact or similar names) - Harrison, OH USPTO Classifications: 408/21, 408/37, 48/102R Tool Categories: woodworking machines : specialty woodworking machines : wood threading machines Assignees: None Manufacturer: Not known to have been produced Witnesses: John Ashley William L. Thompson	Patent Dates: Granted: Dec. 31, 1844 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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