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1. Textiles  (4)
2. Paper Not Otherwise Provided For  (4)
3. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (4)
4. Impregnating Or Coating Of Paper  (4)
5. Production Of Cellulose  (4)
6. Pulp Compositions  (4)
7. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (4)
8. Paper-Making  (4)
9. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (2)
10. Peat  (2)
11. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (2)
12. Petroleum, Gas Or Coke Industries  (2)
13. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (2)
14. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (2)
15. Fuels  (2)
16. Technical Gases Containing Carbon Monoxide  (2)
17. Chemistry  (2)
18. Metallurgy  (2)
19. General Tagging Of New Technological Developments  (2)
20. Lubricants  (2)
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