Class B31B : MAKING BOXES, CARTONS, ENVELOPES, OR BAGS
Subclass 1/18: Box, carton, envelope or bag making machinery characterised by performing specific operations (machinery for performing operations of general application, see the appropriate subclasses) Cutting, e.g. perforating, punching, slitting, trimming Slitting webs longitudinally
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 8267847 | Method and apparatus for a rules-based utilization of a minimum-slit-head configuration plunger slitter | Oct 15, 09 | Sep 18, 12 | MARQUIP, LLC |
| 6565499 | Automatic machine for slitting and creasing paperboard sheets and the like | Jan 02, 01 | May 20, 03 | Not available |
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