IPC Definitions - January 01, 2012
G06K 21/00 - Definition
References relevant to classification in this main group
This main group does not cover:
Detection or correction of errors by rescanning patterns | G06K 9/03 |
Checking correct operation of card-conveying mechanisms | G06K 13/06 |
Record carriers for use with machines and with at least a part designed to carry digital marking | G06K 19/00 |
Attention is drawn to the following places, which may be of interest for search:
Tools for perforating in general | B26F |