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CH Patent: CH-348,624
Machine à affûter les forets
Drill bit sharpening machine
Patentee:

USPTO Classifications:

Tool Categories:
metalworking machines : grinders : sharpening machines : drill sharpening machines

Assignees:
Christen & Cie AG - Berne, Switzerland

Manufacturer:
Christen & Cie AG - Berne, Switzerland

Witnesses:
Unknown

Patent Dates:
Applied: May 16, 1957
Granted: Aug. 31, 1960

Patent Pictures:
Espacenet patent
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