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US Patent: 691,488
Friction-clutch Friction-clutch for counter-shafts
Patentee: Corneil Ridderhof (exact or similar names) - Grand Rapids, MI USPTO Classifications: 192/75, 192/94 Tool Categories: industrial machines : industrial machine mechanisms : industrial machine pulleys and belt drive mechanisms : friction clutches Assignees: Wilmarth & Morman Co. - Grand Rapids, MI Manufacturer: Not known to have been produced Witnesses: Lewis T. Wilmarth John Moran	Patent Dates: Applied: Mar. 13, 1901 Granted: Jan. 21, 1902 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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