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PCE
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Search for IPC and CPC classification codes or keywords
CPC Subgroup
B26F 1/20

with tools carried by a rotating drum or similar support (B26F1/22 takes precedence)

Full Title

Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor (perforating by laser beam B23K26/00; subjecting the grinding tools or the abrading medium to vibration, e.g. grinding with ultrasonic frequency, B24B1/04; perforating by sand-blasting B24C; punching cards or tapes for statistical and record purposes G06K1/00) > Perforating by slitting, i.e. forming cuts closed at their ends without removal of material > with tools carried by a rotating drum or similar support (B26F1/22 takes precedence)