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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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