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US Patent: 988,802
Apparatus for Slitting Screws
Patentees:
David Millington (exact or similar names) - Friedenau, Germany
Christoffer Munthe (exact or similar names) - Friedenau, Germany

USPTO Classifications:
470/60

Tool Categories:
metalworking machines : screw machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 07, 1910
Granted: Apr. 04, 1911

Patent Pictures:
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