Description: 342 / (1) Initiated By A Specific Means (6) With Recorded Information Input (6.4) Tape or Card (6.42) Perforation

Hierarchy/Derived subclasses

342 / 1

-> 6

-> 6.4

-> 6.42

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search just 342/6.42

This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find patents in those subclasses.

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