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US Patent: 829,488
Mandrel-press
Patentee: Corneil Ridderhof (exact or similar names) - Grand Rapids, MI USPTO Classifications: 100/289, 29/251 Tool Categories: metalworking machines : metalworking presses : screw presses Assignees: Wilmarth & Morman Co. - Grand Rapids, MI Manufacturer: Not known to have been produced Witnesses: Theoda S. Vincent F. Guy Bruton	Patent Dates: Applied: Dec. 19, 1902 Granted: Aug. 28, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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