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US Patent: 789,679
Chuck or Tool Holder for Rock Drills or Other Machines
Patentee:
John Turnbull (exact or similar names) - Johannesburg, Transvaal, British Empire

USPTO Classifications:
279/37

Tool Categories:
stoneworking : stone boring and drilling machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 16, 1904
Granted: May 09, 1905

Patent Pictures:
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