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US Patent: 1,428,943
Sealing Device for Rotary Structures
Patentee: David P. Davies (exact or similar names) - Racine, Racine County, WI USPTO Classifications: 277/580, 301/123 Tool Categories: agricultural : tractors propulsion and energy : internal combustion engines : internal combustion traction engines Assignees: J. I. Case Threshing Machine Co. - Racine, Racine County, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 23, 1921 Granted: Sep. 12, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for J. I. Case & Co.

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