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US Patent: 909,437
Tapping Machine
Patentee:
Charles Arthur Mercier (exact or similar names) - Catford, Kent County, England

USPTO Classifications:
408/14, 408/73, 470/181, 470/182, 74/377

Tool Categories:
metalworking machines : drilling and boring : tapping machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 30, 1907
Granted: Jan. 12, 1909

Patent Pictures:
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