Refine My Results

Creation Date 

1. Before 1960  (1,942)
2. 1960 To 1975  (13,755)
3. 1976 To 1991  (65,285)
4. 1992 To 2008  (143,299)
5. After 2008  (248,334)
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New Records 

1. New From Last Month  (15,399)
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Subject 

1. Basic Electric Elements  (243,172)
2. Conversion Or Distribution Of Electric Power  (146,818)
3. Generation  (146,818)
4. Semiconductor Devices  (111,491)
5. Electric Solid State Devices Not Otherwise Provided For  (111,491)
6. Circuit Arrangements Or Systems For Supplying Or Distributingelectric Power  (67,221)
7. Systems For Storing Electric Energy  (67,221)
8. Electric Communication Technique  (61,178)
9. Basic Electronic Circuitry  (60,028)
10. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (50,245)
11. Emergency Protective Circuit Arrangements  (44,389)
12. Electric Techniques Not Otherwise Provided For  (39,676)
13. Calculating  (35,757)
14. Computing  (35,757)
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Language 

1. English  (403,694)
2. Chinese  (85,960)
3. French  (60,684)
4. German  (58,583)
5. Korean  (29,526)
6. Japanese  (23,610)
7. Spanish  (3,098)
8. Russian  (2,307)
9. Portuguese  (1,818)
10. Swedish  (1,342)
11. Italian  (1,119)
12. Polish  (908)
13. Finnish  (821)
14. Dutch  (712)
15. Danish  (560)
16. Norwegian  (455)
17. Romanian  (298)
18. Ukrainian  (210)
19. Czech  (168)
20. Bulgarian  (125)
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