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GB Patent: GB-489,519
Improvements relating to grinding wheel truing devices for grinding or abrading machines
Patentee: Harry Hales Asbridge (exact or similar names) - Ashton-on-Mersey, England USPTO Classifications: Tool Categories: metalworking machines : grinders : grinder dressers Assignees: Churchill Machine Tool Co., Ltd. - Altrincham, England Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 31, 1937 Granted: Jul. 28, 1938 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Churchill Machine Tool Co., Ltd.

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