Refine My Results

Creation Date 

1. Before 1960  (6,379)
2. 1960 To 1975  (6,179)
3. 1976 To 1991  (20,974)
4. 1992 To 2008  (32,763)
5. After 2008  (30,480)
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Subject 

1. Chemistry  (27,321)
2. Metallurgy  (27,321)
3. Transporting  (16,714)
4. Performing Operations  (16,714)
5. Paper Not Otherwise Provided For  (15,799)
6. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (15,799)
7. Impregnating Or Coating Of Paper  (15,799)
8. Pulp Compositions  (15,799)
9. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (15,799)
10. Physical Or Chemical Processes Or Apparatus In General  (10,695)
11. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (10,207)
12. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (10,207)
13. General Tagging Of New Technological Developments  (10,207)
14. Fibrous Raw Materials Or Their Mechanical Treatment  (10,075)
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Language 

1. English  (67,666)
2. French  (19,220)
3. German  (13,458)
4. Chinese  (10,144)
5. Finnish  (7,714)
6. Swedish  (7,229)
7. Portuguese  (3,296)
8. Spanish  (2,906)
9. Norwegian  (2,026)
10. Russian  (1,559)
11. Korean  (1,277)
12. Japanese  (1,012)
13. Danish  (512)
14. Polish  (350)
15. Italian  (290)
16. Dutch  (146)
17. Indonesian  (94)
18. Ukrainian  (78)
19. Czech  (77)
20. Hungarian  (76)
21. More options