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GB Patent: GB-190,908,274
Improvements in and relating to die heads of screwing machines
Patentees:
James Virtue (exact or similar names) - Birmingham, England
Thomas Philip Chatwin (exact or similar names) - Birmingham, England
Thomas Chatwin (exact or similar names) - Birmingham, England
James Chatwin (exact or similar names) - Birmingham, England
Alfred Chatwin (exact or similar names) - Birmingham, England

USPTO Classifications:

Tool Categories:
metalworking machines : metal threading machines

Assignees:
None

Manufacturer:
Thomas Chatwin Ltd. - Birmingham, England

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 06, 1909
Granted: Mar. 24, 1910

Patent Pictures:
Espacenet patent
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Thomas Chatwin
Description:
The three inventors were partners in "Thomas Chatwin, Victoria Works, Great Tindal Street, Birmingham, Engineers' Tool Manufacturers". Thomas Philip Chatwin was an engineer and James Virtue was a draughtsman.

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