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GB Patent: GB-457,517
Improvements relating to screw tapping machines
Patentees: Joseph Jewsbury (exact or similar names) - Birmingham, England Benjamin Laurence Pierce (exact or similar names) - Birmingham, England USPTO Classifications: Tool Categories: metalworking machines : metal threading machines Assignees: James Archdale & Co. Ltd. - Birmingham, England Manufacturer: James Archdale & Co. Ltd. - Birmingham, England Witnesses: Unknown	Patent Dates: Applied: Aug. 21, 1935 Granted: Nov. 30, 1936 Patent Pictures: Espacenet patent Report data errors or omissions to steward Jeff Joslin "Vintage Machinery" entry for James Archdale & Co.

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