Refine My Results

Creation Date 

1. Before 1959  (213)
2. 1959 To 1973  (1,281)
3. 1974 To 1988  (5,324)
4. 1989 To 2004  (13,185)
5. After 2004  (53,602)
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Subject 

1. Basic Electric Elements  (43,697)
2. Climate Change Mitigation Technologies Related Totransportation  (32,398)
3. Vehicles In General  (30,406)
4. Conversion Or Distribution Of Electric Power  (27,645)
5. Generation  (27,645)
6. Electrodynamic Brake Systems For Vehicles, In General  (25,072)
7. Electric Equipment Or Propulsion Of Electrically-Propelledvehicles  (25,072)
8. Magnetic Suspension Or Levitation For Vehicles  (25,072)
9. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (21,629)
10. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (20,438)
11. Semiconductor Devices  (17,743)
12. Electric Solid State Devices Not Otherwise Provided For  (17,743)
13. Chemistry  (17,119)
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Language 

1. English  (65,120)
2. Chinese  (14,486)
3. French  (11,520)
4. German  (8,878)
5. Korean  (4,572)
6. Japanese  (3,810)
7. Russian  (581)
8. Spanish  (423)
9. Portuguese  (245)
10. Swedish  (160)
11. Italian  (125)
12. Polish  (83)
13. Dutch  (81)
14. Romanian  (71)
15. Danish  (58)
16. Finnish  (55)
17. Norwegian  (38)
18. Ukrainian  (22)
19. Czech  (15)
20. Bulgarian  (13)
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