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US Patent: 1,680,074
Taper Turning Attachment for Machine Tools
Patentee: John J. N. Van Hamersveld (exact or similar names) - Cleveland Heights, OH USPTO Classifications: 29/57, 82/17 Tool Categories: metalworking machines : metal lathes : metal lathe accessories and attachments Assignees: Warner & Swasey Co. - Cleveland, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 16, 1926 Granted: Aug. 07, 1928 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Warner & Swasey Co.

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