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Creation Date 

1. Before 2008  (3)
2. 2008 To 2012  (8)
3. 2013 To 2015  (11)
4. 2016 To 2019  (8)
5. After 2019  (6)
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Subject 

1. Regeneration Of Pulping Liquors  (18)
2. Apparatus Therefor  (18)
3. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (18)
4. Fibrous Raw Materials Or Their Mechanical Treatment  (11)
5. Methods Of Producing Paper Thereon  (10)
6. Paper-Making Machines  (10)
7. Transporting  (6)
8. Performing Operations  (6)
9. Nailing Or Stapling Machines In General  (5)
10. Working Or Preserving Wood Or Similar Material  (5)
11. Compositions Based Thereon  (4)
12. Chemistry  (4)
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Language 

1. English  (31)
2. Chinese  (26)
3. Korean  (2)
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