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US Patent: 2,828,531
Method of Making a Helicopter Blade
Patentee: Cyril J. Bath (exact or similar names) - Lake Lucerne, Geauga County, OH USPTO Classifications: 29/455.1, 29/889.6, 415/217.1, 416/230, 72/403 Tool Categories: manufacturing : manufacturing processes Assignees: Cyril Bath Co. - Solon, Cuyahoga County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 21, 1955 Granted: Apr. 01, 1958 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cyril Bath & Co.

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