Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B26
HAND CUTTING TOOLS; CUTTING; SEVERING
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B26D
CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
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1/00
Cutting through work characterised by the nature or movement of the cutting member; or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
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B26D1/0006
Cutting members therefor
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B26D2001/0073
having the form of a three dimensional spiral
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