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GB Patent: GB-190,605
A new or improved speed reducing device for use on drilling machines, lathes, or other machine tools
Patentees: Alfred Herbert (exact or similar names) - Coventry, Warwickshire, England Percy Venables Vernon (exact or similar names) - Coventry, Warwickshire, England USPTO Classifications: Tool Categories: Assignees: None Manufacturer: Alfred Herbert Ltd. - Coventry, Warwickshire, England Witnesses: Unknown	Patent Dates: Applied: Nov. 11, 1921 Granted: Dec. 28, 1922 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Alfred Herbert Ltd.

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