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GB Patent: GB-337,237
Improvements Relating to Roller Bearings for Lathes and Other Machine Tools
Patentee: William Biggart Lang (exact or similar names) - Johnstone, Renfrewshire County, Scotland USPTO Classifications: Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking machine bearings Assignees: John Lang & Sons, Ltd. - Johnstone, Renfrewshire County, Scotland Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 25, 1929 Granted: Oct. 30, 1930 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for John Lang & Sons

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