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GB Patent: GB-185,004
Improved method of locking indexed work tables of machine tools
Patentee: William Alfred Pearn (exact or similar names) - Rusholme, Manchester, England USPTO Classifications: Tool Categories: metalworking machines Assignees: Frank Pearn & Co., Ltd. - West Gorton, Manchester, England Manufacturer: Frank Pearn & Co., Ltd. - West Gorton, Manchester, England Witnesses: Unknown	Patent Dates: Applied: Aug. 11, 1921 Granted: Aug. 31, 1922 Patent Pictures: Espacenet patent Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Frank Pearn & Co., Ltd.

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