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US Patent: 1,689,274
Grinding of Gear-Wheel Teeth
Patentee: Harry Hales Asbridge (exact or similar names) - Ashton-on-Mersey, Cheshire County, England USPTO Classifications: 451/281, 451/900 Tool Categories: metalworking machines : grinders : gear grinding machines Assignees: Churchill Machine Tool Co., Ltd. - Altrincham, Cheshire County, England Manufacturer: Churchill Machine Tool Co., Ltd. - Altrincham, Cheshire County, England Witnesses: Unknown	Patent Dates: Applied: Dec. 27, 1927 Granted: Oct. 30, 1928 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Churchill Machine Tool Co., Ltd.

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