Refine My Results

Creation Date 

1. Before 1996  (1)
2. 1996 To 1996  (1)
3. 1997 To 1997  (1)
4. 1998 To 1999  (8)
5. After 1999  (8)
6. More options 

Subject 

1. Textiles  (16)
2. Production Of Cellulose  (16)
3. Paper-Making  (16)
4. Regeneration Of Pulping Liquors  (11)
5. Apparatus Therefor  (11)
6. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (11)
7. Paper Not Otherwise Provided For  (7)
8. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (7)
9. Impregnating Or Coating Of Paper  (7)
10. Pulp Compositions  (7)
11. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (7)
12. Chemistry  (6)
13. Metallurgy  (6)
14. Transporting  (5)
15. Performing Operations  (5)
16. Compositions Based Thereon  (4)
17. Their Preparation Or Chemical Working-Up  (4)
18. Organic Macromolecular Compounds  (4)
19. Nailing Or Stapling Machines In General  (3)
20. Working Or Preserving Wood Or Similar Material  (3)
21. More options