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Creation Date 

1. Before 1962  (124)
2. 1962 To 1964  (278)
3. 1965 To 1967  (444)
4. 1968 To 1971  (654)
5. After 1971  (1,039)
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Subject 

1. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (2,515)
2. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (2,515)
3. General Tagging Of New Technological Developments  (2,515)
4. Textiles  (2,492)
5. Production Of Cellulose  (2,482)
6. Paper-Making  (2,482)
7. Technical Subjects Covered By Former Uspc  (2,043)
8. Technical Subjects Covered By Former Us Classification  (1,327)
9. Paper Not Otherwise Provided For  (1,235)
10. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (1,235)
11. Impregnating Or Coating Of Paper  (1,235)
12. Pulp Compositions  (1,235)
13. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (1,235)
14. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (911)
15. Transporting  (841)
16. Performing Operations  (841)
17. Metallurgy  (800)
18. Chemistry  (800)
19. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (542)
20. Apparatus Therefor  (506)
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Language 

1. English  (2,452)
2. German  (44)
3. Finnish  (40)
4. Swedish  (29)
5. French  (12)
6. Dutch  (7)
7. Russian  (1)
8. Danish  (1)
9. Italian  (1)
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