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FR Patent: FR-432,352
Cage perfectionnée pour filières à tarauder Improved cage for tapping dies
Patentee: Thomas Chatwin (exact or similar names) - Birmingham, England USPTO Classifications: Tool Categories: metalworking machines : metal threading machines Assignees: Thomas Chatwin - Birmingham, England Manufacturer: Thomas Chatwin Ltd. - Birmingham, England Witnesses: Unknown	Patent Dates: Applied: Jul. 19, 1911 Granted: Dec. 05, 1911 Patent Pictures: Espacenet patent Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Thomas Chatwin

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