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Creation Date 

1. Before 1980  (69)
2. 1980 To 1989  (295)
3. 1990 To 1999  (284)
4. 2000 To 2010  (61)
5. After 2010  (47)
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New Records 

1. New From Last Week  (4)
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Subject 

1. Apparatus Therefor  (381)
2. Regeneration Of Pulping Liquors  (377)
3. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (377)
4. Paper Not Otherwise Provided For  (268)
5. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (268)
6. Impregnating Or Coating Of Paper  (268)
7. Pulp Compositions  (268)
8. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (268)
9. Transporting  (249)
10. Performing Operations  (249)
11. Fibrous Raw Materials Or Their Mechanical Treatment  (170)
12. Nailing Or Stapling Machines In General  (149)
13. Working Or Preserving Wood Or Similar Material  (149)
14. Metallurgy  (142)
15. Chemistry  (142)
16. Compositions Based Thereon  (71)
17. Organic Macromolecular Compounds  (71)
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Language 

1. Swedish  (346)
2. English  (41)
3. French  (3)
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