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Creation Date 

1. Before 1994  (31,080)
2. 1994 To 1996  (43,609)
3. 1997 To 1999  (47,250)
4. 2000 To 2003  (80,723)
5. After 2003  (136,123)
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Subject 

1. Electricity  (143,576)
2. Basic Electric Elements  (88,942)
3. Semiconductor Devices  (55,900)
4. Electric Solid State Devices Not Otherwise Provided For  (55,900)
5. Calculating  (34,474)
6. Computing  (34,474)
7. Counting  (34,474)
8. Human Necessities  (29,148)
9. Hygiene  (28,257)
10. Medical Or Veterinary Science  (28,257)
11. Electric Digital Data Processing  (28,202)
12. Conversion Or Distribution Of Electric Power  (27,854)
13. Generation  (27,854)
14. Diagnosis  (26,373)
15. Identification  (26,373)
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Language 

1. English  (306,429)
2. French  (51,219)
3. German  (50,157)
4. Korean  (12,775)
5. Chinese  (12,470)
6. Russian  (4,433)
7. Japanese  (2,680)
8. Spanish  (2,453)
9. Portuguese  (1,219)
10. Swedish  (1,203)
11. Finnish  (978)
12. Italian  (831)
13. Norwegian  (710)
14. Dutch  (462)
15. Polish  (455)
16. Danish  (441)
17. Romanian  (291)
18. Czech  (255)
19. Ukrainian  (125)
20. Hungarian  (99)
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