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GB Patent: GB-190,820,615
Improvements in apparatus for the dry concentration of crushed ores
Patentee: Hermann George Christian Thofern (exact or similar names) - Paris, France USPTO Classifications: Tool Categories: specialty machines : ore processing apparatus Assignees: Thwaites Brothers, Ltd. - Bradford, Yorkshire, England Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 30, 1908 Granted: Sep. 30, 1909 Patent Pictures: Espacenet patent Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Vulcan Iron Works, Thwaites Bros.

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