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Creation Date 

1. Before 1976  (67,657)
2. 1976 To 1978  (104,361)
3. 1979 To 1981  (91,789)
4. 1982 To 1985  (132,118)
5. After 1985  (101,530)
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Subject 

1. Technical Subjects Covered By Former Uspc  (302,511)
2. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (207,484)
3. Technical Subjects Covered By Former Us Classification  (181,139)
4. Transporting  (171,918)
5. Performing Operations  (171,918)
6. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (148,316)
7. Chemistry  (146,960)
8. Metallurgy  (146,960)
9. Lighting  (145,345)
10. Weapons  (145,345)
11. Blasting  (145,345)
12. Heating  (145,345)
13. Mechanical Engineering  (145,345)
14. Physics  (79,057)
15. Electricity  (64,740)
16. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (60,131)
17. Engineering Elements And Units  (48,844)
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Language 

1. English  (406,769)
2. German  (57,057)
3. French  (49,782)
4. Swedish  (10,233)
5. Dutch  (8,237)
6. Spanish  (6,515)
7. Italian  (6,426)
8. Portuguese  (3,507)
9. Russian  (3,187)
10. Finnish  (2,617)
11. Danish  (2,595)
12. Norwegian  (928)
13. Romanian  (685)
14. Japanese  (423)
15. Polish  (204)
16. Hungarian  (89)
17. Turkish  (87)
18. Bulgarian  (50)
19. Icelandic  (26)
20. Arabic  (4)
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