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CA Patent: CA-840,686
Grinding Machines
Patentees: Edward D. Brennan (exact or similar names) - Altrincham, England John Cyril Jones (exact or similar names) - Altrincham, England USPTO Classifications: Tool Categories: Assignees: Churchill Machine Tool Co., Ltd. - Altrincham, England Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: May 05, 1970 Patent Pictures: CIPO Data Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Churchill Machine Tool Co., Ltd.

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