Refine My Results

Creation Date 

1. Before 1960  (26,218)
2. 1960 To 1975  (45,646)
3. 1976 To 1991  (183,198)
4. 1992 To 2008  (338,784)
5. After 2008  (826,959)
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Subject 

1. Electricity  (459,367)
2. Basic Electric Elements  (237,759)
3. Conversion Or Distribution Of Electric Power  (140,092)
4. Generation  (140,092)
5. Semiconductor Devices  (110,572)
6. Electric Solid State Devices Not Otherwise Provided For  (110,572)
7. Calculating  (105,215)
8. Computing  (105,215)
9. Counting  (105,215)
10. Electric Digital Data Processing  (76,481)
11. Human Necessities  (74,393)
12. Hygiene  (69,874)
13. Medical Or Veterinary Science  (69,874)
14. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (65,692)
15. Performing Operations  (64,958)
16. More options 

Language 

1. English  (1,196,942)
2. Chinese  (442,848)
3. French  (152,098)
4. German  (147,307)
5. Korean  (63,045)
6. Japanese  (41,741)
7. Russian  (22,730)
8. Spanish  (8,022)
9. Portuguese  (4,875)
10. Swedish  (3,040)
11. Polish  (2,909)
12. Italian  (2,774)
13. Finnish  (2,171)
14. Dutch  (1,869)
15. Danish  (1,465)
16. Romanian  (1,421)
17. Norwegian  (1,364)
18. Ukrainian  (1,082)
19. Czech  (562)
20. Bulgarian  (329)
21. More options